97558440 has 64 divisors (see below), whose sum is σ = 334488960. Its totient is φ = 22298880.

The previous prime is 97558421. The next prime is 97558453. The reversal of 97558440 is 4485579.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 97558392 and 97558401.

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, 57231 + ... + 58910.

It is an arithmetic number, because the mean of its divisors is an integer number (5226390).

Almost surely, 2^97558440 is an apocalyptic number.

It is an amenable number.

97558440 is an abundant number, since it is smaller than the sum of its proper divisors (236930520).

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

97558440 is a wasteful number, since it uses less digits than its factorization.

97558440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116162 (or 116158 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 97558440 is about 9877.1676102008. The cubic root of 97558440 is about 460.3501429882.

The spelling of 97558440 in words is "ninety-seven million, five hundred fifty-eight thousand, four hundred forty".