56481858 has 12 divisors (see below), whose sum is σ = 122377398. Its totient is φ = 18827280.

The previous prime is 56481857. The next prime is 56481863. The reversal of 56481858 is 85818465.

56481858 is a `hidden beast` number, since 564 + 8 + 1 + 85 + 8 = 666.

56481858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 1172889 = 7437^2 + 1083^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56481857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1568923 + ... + 1568958.

Almost surely, 2^56481858 is an apocalyptic number.

56481858 is an abundant number, since it is smaller than the sum of its proper divisors (65895540).

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

56481858 is a wasteful number, since it uses less digits than its factorization.

56481858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137889 (or 3137886 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 56481858 is about 7515.4413044079. The cubic root of 56481858 is about 383.6804388907.

The spelling of 56481858 in words is "fifty-six million, four hundred eighty-one thousand, eight hundred fifty-eight".