56347919 has 2 divisors, whose sum is σ = 56347920. Its totient is φ = 56347918.

The previous prime is 56347883. The next prime is 56348029. The reversal of 56347919 is 91974365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56347919 - 2⁸ = 56347663 is a prime.

It is a super-2 number, since 2×56347919² = 6350175951261122, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3357899 and since 56347919 and 3357899 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56347919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56347019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28173959 + 28173960.

It is an arithmetic number, because the mean of its divisors is an integer number (28173960).

Almost surely, 2^56347919 is an apocalyptic number.

56347919 is a deficient number, since it is larger than the sum of its proper divisors (1).

56347919 is an equidigital number, since it uses as much as digits as its factorization.

56347919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 56347919 is about 7506.5250948758. The cubic root of 56347919 is about 383.3769169517.

The spelling of 56347919 in words is "fifty-six million, three hundred forty-seven thousand, nine hundred nineteen".