56145919 has 2 divisors, whose sum is σ = 56145920. Its totient is φ = 56145918.

The previous prime is 56145911. The next prime is 56145923. The reversal of 56145919 is 91954165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56145919 - 2³ = 56145911 is a prime.

It is a super-2 number, since 2×56145919² = 6304728440709122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56145911) 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, 28072959 + 28072960.

It is an arithmetic number, because the mean of its divisors is an integer number (28072960).

Almost surely, 2^56145919 is an apocalyptic number.

56145919 is a deficient number, since it is larger than the sum of its proper divisors (1).

56145919 is an equidigital number, since it uses as much as digits as its factorization.

56145919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 40.

The square root of 56145919 is about 7493.0580539590. The cubic root of 56145919 is about 382.9182495430.

The spelling of 56145919 in words is "fifty-six million, one hundred forty-five thousand, nine hundred nineteen".