56766977 has 2 divisors, whose sum is σ = 56766978. Its totient is φ = 56766976.

The previous prime is 56766973. The next prime is 56766979. The reversal of 56766977 is 77966765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 19324816 = 6119^2 + 4396^2 .

It is a cyclic number.

It is not a de Polignac number, because 56766977 - 2² = 56766973 is a prime.

Together with 56766979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56766973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28383488 + 28383489.

It is an arithmetic number, because the mean of its divisors is an integer number (28383489).

Almost surely, 2^56766977 is an apocalyptic number.

It is an amenable number.

56766977 is a deficient number, since it is larger than the sum of its proper divisors (1).

56766977 is an equidigital number, since it uses as much as digits as its factorization.

56766977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3333960, while the sum is 53.

The square root of 56766977 is about 7534.3863054664. The cubic root of 56766977 is about 384.3249586693.

The spelling of 56766977 in words is "fifty-six million, seven hundred sixty-six thousand, nine hundred seventy-seven".