56439359 has 2 divisors, whose sum is σ = 56439360. Its totient is φ = 56439358.

The previous prime is 56439311. The next prime is 56439373. The reversal of 56439359 is 95393465.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56439359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56439379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28219679 + 28219680.

It is an arithmetic number, because the mean of its divisors is an integer number (28219680).

Almost surely, 2^56439359 is an apocalyptic number.

56439359 is a deficient number, since it is larger than the sum of its proper divisors (1).

56439359 is an equidigital number, since it uses as much as digits as its factorization.

56439359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 44.

The square root of 56439359 is about 7512.6133269322. The cubic root of 56439359 is about 383.5841830485.

The spelling of 56439359 in words is "fifty-six million, four hundred thirty-nine thousand, three hundred fifty-nine".