56388481 has 4 divisors (see below), whose sum is σ = 57912532. Its totient is φ = 54864432.

The previous prime is 56388467. The next prime is 56388487. The reversal of 56388481 is 18488365.

56388481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47334400 + 9054081 = 6880^2 + 3009^2 .

It is a cyclic number.

It is not a de Polignac number, because 56388481 - 2¹⁵ = 56355713 is a prime.

It is a super-2 number, since 2×56388481² = 6359321578974722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56388487) 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 3 ways as a sum of consecutive naturals, for example, 761970 + ... + 762043.

It is an arithmetic number, because the mean of its divisors is an integer number (14478133).

Almost surely, 2^56388481 is an apocalyptic number.

It is an amenable number.

56388481 is a deficient number, since it is larger than the sum of its proper divisors (1524051).

56388481 is a wasteful number, since it uses less digits than its factorization.

56388481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524050.

The product of its digits is 184320, while the sum is 43.

The square root of 56388481 is about 7509.2263915799. The cubic root of 56388481 is about 383.4688860662.

The spelling of 56388481 in words is "fifty-six million, three hundred eighty-eight thousand, four hundred eighty-one".