56661827 has 2 divisors, whose sum is σ = 56661828. Its totient is φ = 56661826.

The previous prime is 56661809. The next prime is 56661883. The reversal of 56661827 is 72816665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56661827 - 2¹⁶ = 56596291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56661887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28330913 + 28330914.

It is an arithmetic number, because the mean of its divisors is an integer number (28330914).

Almost surely, 2^56661827 is an apocalyptic number.

56661827 is a deficient number, since it is larger than the sum of its proper divisors (1).

56661827 is an equidigital number, since it uses as much as digits as its factorization.

56661827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 56661827 is about 7527.4050641639. The cubic root of 56661827 is about 384.0875157700.

The spelling of 56661827 in words is "fifty-six million, six hundred sixty-one thousand, eight hundred twenty-seven".