56605777 has 2 divisors, whose sum is σ = 56605778. Its totient is φ = 56605776.

The previous prime is 56605727. The next prime is 56605793. The reversal of 56605777 is 77750665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39639616 + 16966161 = 6296^2 + 4119^2 .

It is a cyclic number.

It is not a de Polignac number, because 56605777 - 2⁷ = 56605649 is a prime.

It is not a weakly prime, because it can be changed into another prime (56605727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302888 + 28302889.

It is an arithmetic number, because the mean of its divisors is an integer number (28302889).

Almost surely, 2^56605777 is an apocalyptic number.

It is an amenable number.

56605777 is a deficient number, since it is larger than the sum of its proper divisors (1).

56605777 is an equidigital number, since it uses as much as digits as its factorization.

56605777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308700, while the sum is 43.

The square root of 56605777 is about 7523.6810804286. The cubic root of 56605777 is about 383.9608272576.

The spelling of 56605777 in words is "fifty-six million, six hundred five thousand, seven hundred seventy-seven".