97157212 has 12 divisors (see below), whose sum is σ = 170170000. Its totient is φ = 48537216.

The previous prime is 97157189. The next prime is 97157213. The reversal of 97157212 is 21275179.

It is a super-2 number, since 2×97157212² = 18879047687225888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97157213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728 + ... + 14719.

Almost surely, 2^97157212 is an apocalyptic number.

It is an amenable number.

97157212 is a deficient number, since it is larger than the sum of its proper divisors (73012788).

97157212 is a wasteful number, since it uses less digits than its factorization.

97157212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20700 (or 20698 counting only the distinct ones).

The product of its digits is 8820, while the sum is 34.

The square root of 97157212 is about 9856.8358006005. The cubic root of 97157212 is about 459.7181827685.

The spelling of 97157212 in words is "ninety-seven million, one hundred fifty-seven thousand, two hundred twelve".