56539799 has 2 divisors, whose sum is σ = 56539800. Its totient is φ = 56539798.

The previous prime is 56539793. The next prime is 56539859. The reversal of 56539799 is 99793565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56539799 - 2⁴ = 56539783 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56539799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56539793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28269899 + 28269900.

It is an arithmetic number, because the mean of its divisors is an integer number (28269900).

Almost surely, 2^56539799 is an apocalyptic number.

56539799 is a deficient number, since it is larger than the sum of its proper divisors (1).

56539799 is an equidigital number, since it uses as much as digits as its factorization.

56539799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2296350, while the sum is 53.

The square root of 56539799 is about 7519.2951132403. The cubic root of 56539799 is about 383.8115915104.

The spelling of 56539799 in words is "fifty-six million, five hundred thirty-nine thousand, seven hundred ninety-nine".