56544661 has 2 divisors, whose sum is σ = 56544662. Its totient is φ = 56544660.

The previous prime is 56544641. The next prime is 56544679. The reversal of 56544661 is 16644565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 22146436 = 5865^2 + 4706^2 .

It is a cyclic number.

It is not a de Polignac number, because 56544661 - 2⁵ = 56544629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56544661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56544641) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28272330 + 28272331.

It is an arithmetic number, because the mean of its divisors is an integer number (28272331).

Almost surely, 2^56544661 is an apocalyptic number.

It is an amenable number.

56544661 is a deficient number, since it is larger than the sum of its proper divisors (1).

56544661 is an equidigital number, since it uses as much as digits as its factorization.

56544661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 37.

The square root of 56544661 is about 7519.6184078715. The cubic root of 56544661 is about 383.8225928375.

The spelling of 56544661 in words is "fifty-six million, five hundred forty-four thousand, six hundred sixty-one".