56001090 has 64 divisors (see below), whose sum is σ = 141232896. Its totient is φ = 14184192.

The previous prime is 56001083. The next prime is 56001133. The reversal of 56001090 is 9010065.

It is a super-2 number, since 2×56001090² = 6272244162376200, which contains 22 as substring.

It is a Curzon 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, 190984 + ... + 191276.

It is an arithmetic number, because the mean of its divisors is an integer number (2206764).

Almost surely, 2^56001090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56001090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70616448).

56001090 is an abundant number, since it is smaller than the sum of its proper divisors (85231806).

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

56001090 is a wasteful number, since it uses less digits than its factorization.

56001090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 56001090 is about 7483.3876018819. The cubic root of 56001090 is about 382.5887187943.

Subtracting from 56001090 its reverse (9010065), we obtain a square (46991025 = 6855²).

The spelling of 56001090 in words is "fifty-six million, one thousand, ninety".