97155872 has 24 divisors (see below), whose sum is σ = 208665072. Its totient is φ = 44161600.

The previous prime is 97155853. The next prime is 97155907. The reversal of 97155872 is 27855179.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 3 ways as a sum of consecutive naturals, for example, 137654 + ... + 138357.

It is an arithmetic number, because the mean of its divisors is an integer number (8694378).

Almost surely, 2^97155872 is an apocalyptic number.

It is an amenable number.

97155872 is an abundant number, since it is smaller than the sum of its proper divisors (111509200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97155872 is a wasteful number, since it uses less digits than its factorization.

97155872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276032 (or 276024 counting only the distinct ones).

The product of its digits is 176400, while the sum is 44.

The square root of 97155872 is about 9856.7678272342. The cubic root of 97155872 is about 459.7160692689.

The spelling of 97155872 in words is "ninety-seven million, one hundred fifty-five thousand, eight hundred seventy-two".