56367977 has 2 divisors, whose sum is σ = 56367978. Its totient is φ = 56367976.

The previous prime is 56367953. The next prime is 56367979. The reversal of 56367977 is 77976365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35473936 + 20894041 = 5956^2 + 4571^2 .

It is a cyclic number.

It is not a de Polignac number, because 56367977 - 2¹⁰ = 56366953 is a prime.

Together with 56367979, 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 (56367979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28183988 + 28183989.

It is an arithmetic number, because the mean of its divisors is an integer number (28183989).

Almost surely, 2^56367977 is an apocalyptic number.

It is an amenable number.

56367977 is a deficient number, since it is larger than the sum of its proper divisors (1).

56367977 is an equidigital number, since it uses as much as digits as its factorization.

56367977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666980, while the sum is 50.

The square root of 56367977 is about 7507.8610136310. The cubic root of 56367977 is about 383.4224013995.

The spelling of 56367977 in words is "fifty-six million, three hundred sixty-seven thousand, nine hundred seventy-seven".