97712155 has 16 divisors (see below), whose sum is σ = 127411200. Its totient is φ = 71664480.

The previous prime is 97712123. The next prime is 97712161. The reversal of 97712155 is 55121779.

It is not a de Polignac number, because 97712155 - 2⁵ = 97712123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13645 + ... + 19534.

It is an arithmetic number, because the mean of its divisors is an integer number (7963200).

Almost surely, 2^97712155 is an apocalyptic number.

97712155 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

97712155 is a deficient number, since it is larger than the sum of its proper divisors (29699045).

97712155 is a wasteful number, since it uses less digits than its factorization.

97712155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33234.

The product of its digits is 22050, while the sum is 37.

The square root of 97712155 is about 9884.9458774441. The cubic root of 97712155 is about 460.5917950335.

The spelling of 97712155 in words is "ninety-seven million, seven hundred twelve thousand, one hundred fifty-five".