90556572 has 12 divisors (see below), whose sum is σ = 211298696. Its totient is φ = 30185520.

The previous prime is 90556559. The next prime is 90556579. The reversal of 90556572 is 27565509.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 90556572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90556579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3773179 + ... + 3773202.

Almost surely, 2^90556572 is an apocalyptic number.

It is an amenable number.

90556572 is an abundant number, since it is smaller than the sum of its proper divisors (120742124).

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

90556572 is a wasteful number, since it uses less digits than its factorization.

90556572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7546388 (or 7546386 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 90556572 is about 9516.1216890076. The cubic root of 90556572 is about 449.0623637134.

The spelling of 90556572 in words is "ninety million, five hundred fifty-six thousand, five hundred seventy-two".