97 (number)

 ← 96 97 98 →
Cardinalninety-seven
Ordinal97th
(ninety-seventh)
Factorizationprime
Prime25th
Divisors1, 97
Roman numeralXCVII
Binary11000012
Ternary101213
Quaternary12014
Quinary3425
Senary2416
Octal1418
Duodecimal8112
Vigesimal4H20
Base 362P36

 ← 96 97 98 →
Cardinalninety-seven
Ordinal97th
(ninety-seventh)
Factorizationprime
Prime25th
Divisors1, 97
Roman numeralXCVII
Binary11000012
Ternary101213
Quaternary12014
Quinary3425
Senary2416
Octal1418
Duodecimal8112
Vigesimal4H20
Base 362P36

97 (ninety-seven) is the natural number following 96 and preceding 98.

In mathematics

97 is the 25th prime number (the largest two-digit prime number in base 10), following 89 and preceding 101. 97 is a Proth prime as it is 3 × 25 + 1.

The numbers 97, 907, 9007, 90007 and 900007 are happy primes. However, 9000007 (read as nine million seven) is composite and has the factorisation 277 × 32491.

97 is the tenth member of the Mian–Chowla sequence.

97 is the smallest factor of one more than the product of the first twenty-five terms of the Euclid–Mullin sequence, making it the twenty-sixth term.

Since there is no integer that added to its own digits adds up to 97, 97 is a self number in base 10.

97 is the highest two digit number where the sum of its digits are a square.

Ninety-seven is: