90056557045 has 32 divisors (see below), whose sum is σ = 133822708992. Its totient is φ = 56653074432.

The previous prime is 90056557033. The next prime is 90056557079. The reversal of 90056557045 is 54075565009.

It is a cyclic number.

It is not a de Polignac number, because 90056557045 - 2¹⁵ = 90056524277 is a prime.

It is a super-2 number, since 2×90056557045² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 90056556986 and 90056557004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532972 + ... + 681301.

It is an arithmetic number, because the mean of its divisors is an integer number (4181959656).

Almost surely, 2^90056557045 is an apocalyptic number.

It is an amenable number.

90056557045 is a deficient number, since it is larger than the sum of its proper divisors (43766151947).

90056557045 is a wasteful number, since it uses less digits than its factorization.

90056557045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214461.

The product of its (nonzero) digits is 945000, while the sum is 46.

The spelling of 90056557045 in words is "ninety billion, fifty-six million, five hundred fifty-seven thousand, forty-five".