97656251 has 16 divisors (see below), whose sum is σ = 122473728. Its totient is φ = 75645600.

The previous prime is 97656233. The next prime is 97656277. The reversal of 97656251 is 15265679.

It is a cyclic number.

It is not a de Polignac number, because 97656251 - 2²² = 93461947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97656199 and 97656208.

It is not an unprimeable number, because it can be changed into a prime (97659251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9656 + ... + 16986.

It is an arithmetic number, because the mean of its divisors is an integer number (7654608).

Almost surely, 2^97656251 is an apocalyptic number.

97656251 is a deficient number, since it is larger than the sum of its proper divisors (24817477).

97656251 is a wasteful number, since it uses less digits than its factorization.

97656251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522.

The product of its digits is 113400, while the sum is 41.

The square root of 97656251 is about 9882.1177386226. The cubic root of 97656251 is about 460.5039389019.

The spelling of 97656251 in words is "ninety-seven million, six hundred fifty-six thousand, two hundred fifty-one".