97157072 has 10 divisors (see below), whose sum is σ = 188241858. Its totient is φ = 48578528.

The previous prime is 97157033. The next prime is 97157107. The reversal of 97157072 is 27075179.

It can be written as a sum of positive squares in only one way, i.e., 95726656 + 1430416 = 9784^2 + 1196^2 .

It is a super-2 number, since 2×97157072² = 18878993279226368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3036143 + ... + 3036174.

Almost surely, 2^97157072 is an apocalyptic number.

It is an amenable number.

97157072 is a deficient number, since it is larger than the sum of its proper divisors (91084786).

97157072 is a wasteful number, since it uses less digits than its factorization.

97157072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072325 (or 6072319 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 97157072 is about 9856.8286989275. The cubic root of 97157072 is about 459.7179619561.

The spelling of 97157072 in words is "ninety-seven million, one hundred fifty-seven thousand, seventy-two".