56751619 has 2 divisors, whose sum is σ = 56751620. Its totient is φ = 56751618.

The previous prime is 56751551. The next prime is 56751641. The reversal of 56751619 is 91615765.

56751619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56751619 is a prime.

It is a super-2 number, since 2×56751619² = 6441492518242322, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (56751659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28375809 + 28375810.

It is an arithmetic number, because the mean of its divisors is an integer number (28375810).

Almost surely, 2^56751619 is an apocalyptic number.

56751619 is a deficient number, since it is larger than the sum of its proper divisors (1).

56751619 is an equidigital number, since it uses as much as digits as its factorization.

56751619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 40.

The square root of 56751619 is about 7533.3670426974. The cubic root of 56751619 is about 384.2902965271.

The spelling of 56751619 in words is "fifty-six million, seven hundred fifty-one thousand, six hundred nineteen".