97515951 has 32 divisors (see below), whose sum is σ = 146065920. Its totient is φ = 57456000.

The previous prime is 97515931. The next prime is 97515989. The reversal of 97515951 is 15951579.

It is not a de Polignac number, because 97515951 - 2¹³ = 97507759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97515931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170496 + ... + 171066.

It is an arithmetic number, because the mean of its divisors is an integer number (4564560).

Almost surely, 2^97515951 is an apocalyptic number.

97515951 is a deficient number, since it is larger than the sum of its proper divisors (48549969).

97515951 is a wasteful number, since it uses less digits than its factorization.

97515951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its digits is 70875, while the sum is 42.

The square root of 97515951 is about 9875.0165063153. The cubic root of 97515951 is about 460.2833021712.

The spelling of 97515951 in words is "ninety-seven million, five hundred fifteen thousand, nine hundred fifty-one".