56609761 has 12 divisors (see below), whose sum is σ = 62612352. Its totient is φ = 51136176.

The previous prime is 56609747. The next prime is 56609767. The reversal of 56609761 is 16790665.

It is not a de Polignac number, because 56609761 - 2⁹ = 56609249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56609767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4380 + ... + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (5217696).

Almost surely, 2^56609761 is an apocalyptic number.

It is an amenable number.

56609761 is a deficient number, since it is larger than the sum of its proper divisors (6002591).

56609761 is a wasteful number, since it uses less digits than its factorization.

56609761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200 (or 7187 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 56609761 is about 7523.9458397838. The cubic root of 56609761 is about 383.9698349605.

The spelling of 56609761 in words is "fifty-six million, six hundred nine thousand, seven hundred sixty-one".