56071739 has 2 divisors, whose sum is σ = 56071740. Its totient is φ = 56071738.

The previous prime is 56071733. The next prime is 56071801. The reversal of 56071739 is 93717065.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56071739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56071733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28035869 + 28035870.

It is an arithmetic number, because the mean of its divisors is an integer number (28035870).

Almost surely, 2^56071739 is an apocalyptic number.

56071739 is a deficient number, since it is larger than the sum of its proper divisors (1).

56071739 is an equidigital number, since it uses as much as digits as its factorization.

56071739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 56071739 is about 7488.1065029819. The cubic root of 56071739 is about 382.7495379966.

The spelling of 56071739 in words is "fifty-six million, seventy-one thousand, seven hundred thirty-nine".