56516761 has 8 divisors (see below), whose sum is σ = 64700864. Its totient is φ = 48360240.

The previous prime is 56516729. The next prime is 56516767. The reversal of 56516761 is 16761565.

56516761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56516761 - 2⁵ = 56516729 is a prime.

It is a super-2 number, since 2×56516761² = 6388288547862242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56516761.

It is not an unprimeable number, because it can be changed into a prime (56516767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2295 + ... + 10876.

It is an arithmetic number, because the mean of its divisors is an integer number (8087608).

Almost surely, 2^56516761 is an apocalyptic number.

It is an amenable number.

56516761 is a deficient number, since it is larger than the sum of its proper divisors (8184103).

56516761 is a wasteful number, since it uses less digits than its factorization.

56516761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791.

The product of its digits is 37800, while the sum is 37.

The square root of 56516761 is about 7517.7630316471. The cubic root of 56516761 is about 383.7594544739.

The spelling of 56516761 in words is "fifty-six million, five hundred sixteen thousand, seven hundred sixty-one".