90521858055 has 16 divisors (see below), whose sum is σ = 144851386464. Its totient is φ = 48272853120.

The previous prime is 90521858033. The next prime is 90521858129. The reversal of 90521858055 is 55085812509.

It is not a de Polignac number, because 90521858055 - 2¹⁷ = 90521726983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90521857995 and 90521858013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203364 + ... + 471593.

It is an arithmetic number, because the mean of its divisors is an integer number (9053211654).

Almost surely, 2^90521858055 is an apocalyptic number.

90521858055 is a deficient number, since it is larger than the sum of its proper divisors (54329528409).

90521858055 is a wasteful number, since it uses less digits than its factorization.

90521858055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683906.

The product of its (nonzero) digits is 720000, while the sum is 48.

The spelling of 90521858055 in words is "ninety billion, five hundred twenty-one million, eight hundred fifty-eight thousand, fifty-five".