90975528 has 64 divisors (see below), whose sum is σ = 288816000. Its totient is φ = 25992576.

The previous prime is 90975527. The next prime is 90975529. The reversal of 90975528 is 82557909.

It is a happy number.

90975528 is a `hidden beast` number, since 9 + 0 + 97 + 552 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (90975527) and next prime (90975529).

It is not an unprimeable number, because it can be changed into a prime (90975527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28573 + ... + 31596.

It is an arithmetic number, because the mean of its divisors is an integer number (4512750).

Almost surely, 2^90975528 is an apocalyptic number.

It is an amenable number.

90975528 is an abundant number, since it is smaller than the sum of its proper divisors (197840472).

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

90975528 is a wasteful number, since it uses less digits than its factorization.

90975528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60191 (or 60181 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 90975528 is about 9538.1092465960. The cubic root of 90975528 is about 449.7538209042.

The spelling of 90975528 in words is "ninety million, nine hundred seventy-five thousand, five hundred twenty-eight".