90552539 has 24 divisors (see below), whose sum is σ = 117615168. Its totient is φ = 68901840.

The previous prime is 90552521. The next prime is 90552563. The reversal of 90552539 is 93525509.

It is a de Polignac number, because none of the positive numbers 2^k-90552539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90552509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21224 + ... + 25130.

It is an arithmetic number, because the mean of its divisors is an integer number (4900632).

Almost surely, 2^90552539 is an apocalyptic number.

90552539 is a deficient number, since it is larger than the sum of its proper divisors (27062629).

90552539 is a wasteful number, since it uses less digits than its factorization.

90552539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3968 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 38.

The square root of 90552539 is about 9515.9097830948. The cubic root of 90552539 is about 449.0556971794.

The spelling of 90552539 in words is "ninety million, five hundred fifty-two thousand, five hundred thirty-nine".