90564051 has 32 divisors (see below), whose sum is σ = 132710400. Its totient is φ = 54721440.

The previous prime is 90564017. The next prime is 90564053. The reversal of 90564051 is 15046509.

It is not a de Polignac number, because 90564051 - 2¹⁵ = 90531283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90564053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188830 + ... + 189308.

It is an arithmetic number, because the mean of its divisors is an integer number (4147200).

Almost surely, 2^90564051 is an apocalyptic number.

90564051 is a deficient number, since it is larger than the sum of its proper divisors (42146349).

90564051 is a wasteful number, since it uses less digits than its factorization.

90564051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 90564051 is about 9516.5146456042. The cubic root of 90564051 is about 449.0747259487.

The spelling of 90564051 in words is "ninety million, five hundred sixty-four thousand, fifty-one".