56780537 has 8 divisors (see below), whose sum is σ = 64635840. Its totient is φ = 49374160.

The previous prime is 56780519. The next prime is 56780551. The reversal of 56780537 is 73508765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56780537 - 2¹² = 56776441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56780494 and 56780503.

It is not an unprimeable number, because it can be changed into a prime (56780587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111962 + ... + 112467.

It is an arithmetic number, because the mean of its divisors is an integer number (8079480).

Almost surely, 2^56780537 is an apocalyptic number.

It is an amenable number.

56780537 is a deficient number, since it is larger than the sum of its proper divisors (7855303).

56780537 is a wasteful number, since it uses less digits than its factorization.

56780537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224463.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 56780537 is about 7535.2861259543. The cubic root of 56780537 is about 384.3555576303.

Subtracting from 56780537 its sum of digits (41), we obtain a triangular number (56780496 = T₁₀₆₅₆).

The spelling of 56780537 in words is "fifty-six million, seven hundred eighty thousand, five hundred thirty-seven".