90512597 has 4 divisors (see below), whose sum is σ = 103442976. Its totient is φ = 77582220.

The previous prime is 90512557. The next prime is 90512623. The reversal of 90512597 is 79521509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90512597 - 2⁸ = 90512341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90512597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90512557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6465179 + ... + 6465192.

It is an arithmetic number, because the mean of its divisors is an integer number (25860744).

Almost surely, 2^90512597 is an apocalyptic number.

It is an amenable number.

90512597 is a deficient number, since it is larger than the sum of its proper divisors (12930379).

90512597 is a wasteful number, since it uses less digits than its factorization.

90512597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930378.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 90512597 is about 9513.8108558033. The cubic root of 90512597 is about 448.9896625117.

The spelling of 90512597 in words is "ninety million, five hundred twelve thousand, five hundred ninety-seven".