56656361 has 4 divisors (see below), whose sum is σ = 58187652. Its totient is φ = 55125072.

The previous prime is 56656357. The next prime is 56656363. The reversal of 56656361 is 16365665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44622400 + 12033961 = 6680^2 + 3469^2 .

It is a cyclic number.

It is not a de Polignac number, because 56656361 - 2² = 56656357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56656363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765590 + ... + 765663.

It is an arithmetic number, because the mean of its divisors is an integer number (14546913).

Almost surely, 2^56656361 is an apocalyptic number.

It is an amenable number.

56656361 is a deficient number, since it is larger than the sum of its proper divisors (1531291).

56656361 is a wasteful number, since it uses less digits than its factorization.

56656361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531290.

The product of its digits is 97200, while the sum is 38.

The square root of 56656361 is about 7527.0419820803. The cubic root of 56656361 is about 384.0751647747.

The spelling of 56656361 in words is "fifty-six million, six hundred fifty-six thousand, three hundred sixty-one".