56776501 has 2 divisors, whose sum is σ = 56776502. Its totient is φ = 56776500.

The previous prime is 56776457. The next prime is 56776507. The reversal of 56776501 is 10567765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 7986276 = 6985^2 + 2826^2 .

It is a cyclic number.

It is not a de Polignac number, because 56776501 - 2⁷ = 56776373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56776507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28388250 + 28388251.

It is an arithmetic number, because the mean of its divisors is an integer number (28388251).

Almost surely, 2^56776501 is an apocalyptic number.

It is an amenable number.

56776501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56776501 is an equidigital number, since it uses as much as digits as its factorization.

56776501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 56776501 is about 7535.0183145099. The cubic root of 56776501 is about 384.3464506612.

The spelling of 56776501 in words is "fifty-six million, seven hundred seventy-six thousand, five hundred one".