97513520 has 40 divisors (see below), whose sum is σ = 244161456. Its totient is φ = 36004608.

The previous prime is 97513519. The next prime is 97513523. The reversal of 97513520 is 2531579.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (97513523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45842 + ... + 47921.

Almost surely, 2^97513520 is an apocalyptic number.

It is an amenable number.

97513520 is an abundant number, since it is smaller than the sum of its proper divisors (146647936).

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

97513520 is a wasteful number, since it uses less digits than its factorization.

97513520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93789 (or 93783 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 97513520 is about 9874.8934171463. The cubic root of 97513520 is about 460.2794772995.

The spelling of 97513520 in words is "ninety-seven million, five hundred thirteen thousand, five hundred twenty".