56554590 has 16 divisors (see below), whose sum is σ = 135731088. Its totient is φ = 15081216.

The previous prime is 56554573. The next prime is 56554639. The reversal of 56554590 is 9545565.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 942547 + ... + 942606.

It is an arithmetic number, because the mean of its divisors is an integer number (8483193).

Almost surely, 2^56554590 is an apocalyptic number.

56554590 is an abundant number, since it is smaller than the sum of its proper divisors (79176498).

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

56554590 is a wasteful number, since it uses less digits than its factorization.

56554590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885163.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 56554590 is about 7520.2785852653. The cubic root of 56554590 is about 383.8450573898.

It can be divided in two parts, 565 and 54590, that added together give a palindrome (55155).

The spelling of 56554590 in words is "fifty-six million, five hundred fifty-four thousand, five hundred ninety".