97505556 has 48 divisors (see below), whose sum is σ = 238267008. Its totient is φ = 30976000.

The previous prime is 97505539. The next prime is 97505563. The reversal of 97505556 is 65550579.

It is a congruent number.

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, 110236 + ... + 111116.

It is an arithmetic number, because the mean of its divisors is an integer number (4963896).

Almost surely, 2^97505556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97505556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119133504).

97505556 is an abundant number, since it is smaller than the sum of its proper divisors (140761452).

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

97505556 is a wasteful number, since it uses less digits than its factorization.

97505556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 236250, while the sum is 42.

The square root of 97505556 is about 9874.4901640540. The cubic root of 97505556 is about 460.2669465053.

The spelling of 97505556 in words is "ninety-seven million, five hundred five thousand, five hundred fifty-six".