56612539 has 2 divisors, whose sum is σ = 56612540. Its totient is φ = 56612538.

The previous prime is 56612537. The next prime is 56612561. The reversal of 56612539 is 93521665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56612539 - 2¹ = 56612537 is a prime.

Together with 56612537, it forms a pair of twin primes.

It is equal to p_3372679 and since 56612539 and 3372679 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 56612498 and 56612507.

It is not a weakly prime, because it can be changed into another prime (56612537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28306269 + 28306270.

It is an arithmetic number, because the mean of its divisors is an integer number (28306270).

Almost surely, 2^56612539 is an apocalyptic number.

56612539 is a deficient number, since it is larger than the sum of its proper divisors (1).

56612539 is an equidigital number, since it uses as much as digits as its factorization.

56612539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 56612539 is about 7524.1304480983. The cubic root of 56612539 is about 383.9761156839.

The spelling of 56612539 in words is "fifty-six million, six hundred twelve thousand, five hundred thirty-nine".