56505647 has 8 divisors (see below), whose sum is σ = 61761792. Its totient is φ = 51269400.

The previous prime is 56505629. The next prime is 56505661. The reversal of 56505647 is 74650565.

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 56505647 - 2⁸ = 56505391 is a prime.

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 56505647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56505607) 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, 1322 + ... + 10712.

It is an arithmetic number, because the mean of its divisors is an integer number (7720224).

Almost surely, 2^56505647 is an apocalyptic number.

56505647 is a deficient number, since it is larger than the sum of its proper divisors (5256145).

56505647 is a wasteful number, since it uses less digits than its factorization.

56505647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9949.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 56505647 is about 7517.0238126535. The cubic root of 56505647 is about 383.7342974402.

The spelling of 56505647 in words is "fifty-six million, five hundred five thousand, six hundred forty-seven".