56086139 has 2 divisors, whose sum is σ = 56086140. Its totient is φ = 56086138.

The previous prime is 56086127. The next prime is 56086141. The reversal of 56086139 is 93168065.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56086139 - 2⁴ = 56086123 is a prime.

It is a Sophie Germain prime.

Together with 56086141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56086189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28043069 + 28043070.

It is an arithmetic number, because the mean of its divisors is an integer number (28043070).

Almost surely, 2^56086139 is an apocalyptic number.

56086139 is a deficient number, since it is larger than the sum of its proper divisors (1).

56086139 is an equidigital number, since it uses as much as digits as its factorization.

56086139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 56086139 is about 7489.0679660422. The cubic root of 56086139 is about 382.7823003215.

The spelling of 56086139 in words is "fifty-six million, eighty-six thousand, one hundred thirty-nine".