90253859522 has 18 divisors (see below), whose sum is σ = 137167172793. Its totient is φ = 44539133184.

The previous prime is 90253859519. The next prime is 90253859551. The reversal of 90253859522 is 22595835209.

It can be written as a sum of positive squares in 2 ways, for example, as 61965647041 + 28288212481 = 248929^2 + 168191^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=212431.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33562754 + ... + 33565442.

Almost surely, 2^90253859522 is an apocalyptic number.

90253859522 is a deficient number, since it is larger than the sum of its proper divisors (46913313271).

90253859522 is an frugal number, since it uses more digits than its factorization.

90253859522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 50.

Multiplying 90253859522 by its sum of digits (50), we get a square (4512692976100 = 2124310²).

The spelling of 90253859522 in words is "ninety billion, two hundred fifty-three million, eight hundred fifty-nine thousand, five hundred twenty-two".