56477591 has 2 divisors, whose sum is σ = 56477592. Its totient is φ = 56477590.

The previous prime is 56477527. The next prime is 56477609. The reversal of 56477591 is 19577465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56477591 - 2⁶ = 56477527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56477191) by changing a digit.

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 as a sum of consecutive naturals, namely, 28238795 + 28238796.

It is an arithmetic number, because the mean of its divisors is an integer number (28238796).

Almost surely, 2^56477591 is an apocalyptic number.

56477591 is a deficient number, since it is larger than the sum of its proper divisors (1).

56477591 is an equidigital number, since it uses as much as digits as its factorization.

56477591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 56477591 is about 7515.1574168476. The cubic root of 56477591 is about 383.6707767578.

The spelling of 56477591 in words is "fifty-six million, four hundred seventy-seven thousand, five hundred ninety-one".