56705239 has 2 divisors, whose sum is σ = 56705240. Its totient is φ = 56705238.

The previous prime is 56705227. The next prime is 56705263. The reversal of 56705239 is 93250765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56705239 - 2⁹ = 56704727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56705198 and 56705207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56705219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28352619 + 28352620.

It is an arithmetic number, because the mean of its divisors is an integer number (28352620).

Almost surely, 2^56705239 is an apocalyptic number.

56705239 is a deficient number, since it is larger than the sum of its proper divisors (1).

56705239 is an equidigital number, since it uses as much as digits as its factorization.

56705239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 56705239 is about 7530.2881086981. The cubic root of 56705239 is about 384.1855815026.

The spelling of 56705239 in words is "fifty-six million, seven hundred five thousand, two hundred thirty-nine".