97915975 has 6 divisors (see below), whose sum is σ = 121415840. Its totient is φ = 78332760.

The previous prime is 97915957. The next prime is 97915981. The reversal of 97915975 is 57951979.

It is a happy number.

It is not a de Polignac number, because 97915975 - 2⁵ = 97915943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1958295 + ... + 1958344.

Almost surely, 2^97915975 is an apocalyptic number.

97915975 is a deficient number, since it is larger than the sum of its proper divisors (23499865).

97915975 is a wasteful number, since it uses less digits than its factorization.

97915975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916649 (or 3916644 counting only the distinct ones).

The product of its digits is 893025, while the sum is 52.

The square root of 97915975 is about 9895.2501231652. The cubic root of 97915975 is about 460.9118255737.

The spelling of 97915975 in words is "ninety-seven million, nine hundred fifteen thousand, nine hundred seventy-five".