56431553 has 8 divisors (see below), whose sum is σ = 57514560. Its totient is φ = 55352880.

The previous prime is 56431547. The next prime is 56431567. The reversal of 56431553 is 35513465.

56431553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56431553 - 2¹⁴ = 56415169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56431513) 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 7 ways as a sum of consecutive naturals, for example, 38276 + ... + 39722.

It is an arithmetic number, because the mean of its divisors is an integer number (7189320).

Almost surely, 2^56431553 is an apocalyptic number.

It is an amenable number.

56431553 is a deficient number, since it is larger than the sum of its proper divisors (1083007).

56431553 is a wasteful number, since it uses less digits than its factorization.

56431553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167.

The product of its digits is 27000, while the sum is 32.

The square root of 56431553 is about 7512.0937826947. The cubic root of 56431553 is about 383.5664980131.

The spelling of 56431553 in words is "fifty-six million, four hundred thirty-one thousand, five hundred fifty-three".