56078839 has 2 divisors, whose sum is σ = 56078840. Its totient is φ = 56078838.

The previous prime is 56078777. The next prime is 56078879. The reversal of 56078839 is 93887065.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56078839 - 2²¹ = 53981687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56078879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28039419 + 28039420.

It is an arithmetic number, because the mean of its divisors is an integer number (28039420).

Almost surely, 2^56078839 is an apocalyptic number.

56078839 is a deficient number, since it is larger than the sum of its proper divisors (1).

56078839 is an equidigital number, since it uses as much as digits as its factorization.

56078839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 56078839 is about 7488.5805731126. The cubic root of 56078839 is about 382.7656923438.

The spelling of 56078839 in words is "fifty-six million, seventy-eight thousand, eight hundred thirty-nine".