56505767 has 2 divisors, whose sum is σ = 56505768. Its totient is φ = 56505766.

The previous prime is 56505731. The next prime is 56505793. The reversal of 56505767 is 76750565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56505767 - 2¹⁴ = 56489383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56525767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28252883 + 28252884.

It is an arithmetic number, because the mean of its divisors is an integer number (28252884).

Almost surely, 2^56505767 is an apocalyptic number.

56505767 is a deficient number, since it is larger than the sum of its proper divisors (1).

56505767 is an equidigital number, since it uses as much as digits as its factorization.

56505767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 56505767 is about 7517.0317945317. The cubic root of 56505767 is about 383.7345690832.

The spelling of 56505767 in words is "fifty-six million, five hundred five thousand, seven hundred sixty-seven".