56604239 has 2 divisors, whose sum is σ = 56604240. Its totient is φ = 56604238.

The previous prime is 56604217. The next prime is 56604241. The reversal of 56604239 is 93240665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56604239 - 2¹² = 56600143 is a prime.

Together with 56604241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56604199 and 56604208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56604209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302119 + 28302120.

It is an arithmetic number, because the mean of its divisors is an integer number (28302120).

Almost surely, 2^56604239 is an apocalyptic number.

56604239 is a deficient number, since it is larger than the sum of its proper divisors (1).

56604239 is an equidigital number, since it uses as much as digits as its factorization.

56604239 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 35.

The square root of 56604239 is about 7523.5788691287. The cubic root of 56604239 is about 383.9573497734.

The spelling of 56604239 in words is "fifty-six million, six hundred four thousand, two hundred thirty-nine".