56556161 has 16 divisors (see below), whose sum is σ = 61560000. Its totient is φ = 51760128.

The previous prime is 56556133. The next prime is 56556163. The reversal of 56556161 is 16165565.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56556161 is a prime.

It is a Duffinian number.

It is a zygodrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (56556163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113090 + ... + 113588.

It is an arithmetic number, because the mean of its divisors is an integer number (3847500).

Almost surely, 2^56556161 is an apocalyptic number.

It is an amenable number.

56556161 is a deficient number, since it is larger than the sum of its proper divisors (5003839).

56556161 is a wasteful number, since it uses less digits than its factorization.

56556161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its digits is 27000, while the sum is 35.

The square root of 56556161 is about 7520.3830354577. The cubic root of 56556161 is about 383.8486115664.

The spelling of 56556161 in words is "fifty-six million, five hundred fifty-six thousand, one hundred sixty-one".