56928919 has 2 divisors, whose sum is σ = 56928920. Its totient is φ = 56928918.

The previous prime is 56928881. The next prime is 56928931. The reversal of 56928919 is 91982965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56928919 - 2¹¹ = 56926871 is a prime.

It is a super-2 number, since 2×56928919² = 6481803637017122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56928419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28464459 + 28464460.

It is an arithmetic number, because the mean of its divisors is an integer number (28464460).

Almost surely, 2^56928919 is an apocalyptic number.

56928919 is a deficient number, since it is larger than the sum of its proper divisors (1).

56928919 is an equidigital number, since it uses as much as digits as its factorization.

56928919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 49.

The square root of 56928919 is about 7545.1255125412. The cubic root of 56928919 is about 384.6900727190.

The spelling of 56928919 in words is "fifty-six million, nine hundred twenty-eight thousand, nine hundred nineteen".