56590020 has 144 divisors (see below), whose sum is σ = 182997360. Its totient is φ = 14128128.

The previous prime is 56590013. The next prime is 56590033. The reversal of 56590020 is 2009565.

56590020 is a `hidden beast` number, since 5 + 659 + 0 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 10458756 + 46131264 = 3234^2 + 6792^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192994 + ... + 193286.

It is an arithmetic number, because the mean of its divisors is an integer number (1270815).

Almost surely, 2^56590020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56590020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91498680).

56590020 is an abundant number, since it is smaller than the sum of its proper divisors (126407340).

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

56590020 is a wasteful number, since it uses less digits than its factorization.

56590020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 56590020 is about 7522.6338472639. The cubic root of 56590020 is about 383.9251970179.

Adding to 56590020 its reverse (2009565), we get a palindrome (58599585).

The spelling of 56590020 in words is "fifty-six million, five hundred ninety thousand, twenty".