56780519 has 2 divisors, whose sum is σ = 56780520. Its totient is φ = 56780518.

The previous prime is 56780489. The next prime is 56780551. The reversal of 56780519 is 91508765.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56780519 is a prime.

It is a super-2 number, since 2×56780519² = 6448054675818722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56780219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28390259 + 28390260.

It is an arithmetic number, because the mean of its divisors is an integer number (28390260).

Almost surely, 2^56780519 is an apocalyptic number.

56780519 is a deficient number, since it is larger than the sum of its proper divisors (1).

56780519 is an equidigital number, since it uses as much as digits as its factorization.

56780519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 56780519 is about 7535.2849315736. The cubic root of 56780519 is about 384.3555170154.

The spelling of 56780519 in words is "fifty-six million, seven hundred eighty thousand, five hundred nineteen".