56215877 has 2 divisors, whose sum is σ = 56215878. Its totient is φ = 56215876.

The previous prime is 56215867. The next prime is 56215897. The reversal of 56215877 is 77851265.

56215877 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., 55741156 + 474721 = 7466^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 56215877 - 2¹⁰ = 56214853 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 (56215837) 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, 28107938 + 28107939.

It is an arithmetic number, because the mean of its divisors is an integer number (28107939).

Almost surely, 2^56215877 is an apocalyptic number.

It is an amenable number.

56215877 is a deficient number, since it is larger than the sum of its proper divisors (1).

56215877 is an equidigital number, since it uses as much as digits as its factorization.

56215877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 41.

The square root of 56215877 is about 7497.7247882274. The cubic root of 56215877 is about 383.0772226676.

The spelling of 56215877 in words is "fifty-six million, two hundred fifteen thousand, eight hundred seventy-seven".