56331553 has 2 divisors, whose sum is σ = 56331554. Its totient is φ = 56331552.

The previous prime is 56331547. The next prime is 56331593. The reversal of 56331553 is 35513365.

It is a happy number.

56331553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29942784 + 26388769 = 5472^2 + 5137^2 .

It is a cyclic number.

It is not a de Polignac number, because 56331553 - 2¹⁷ = 56200481 is a prime.

It is not a weakly prime, because it can be changed into another prime (56331533) 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 as a sum of consecutive naturals, namely, 28165776 + 28165777.

It is an arithmetic number, because the mean of its divisors is an integer number (28165777).

Almost surely, 2^56331553 is an apocalyptic number.

It is an amenable number.

56331553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56331553 is an equidigital number, since it uses as much as digits as its factorization.

56331553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 31.

The square root of 56331553 is about 7505.4348974593. The cubic root of 56331553 is about 383.3397966564.

The spelling of 56331553 in words is "fifty-six million, three hundred thirty-one thousand, five hundred fifty-three".