56506757 has 2 divisors, whose sum is σ = 56506758. Its totient is φ = 56506756.

The previous prime is 56506753. The next prime is 56506771. The reversal of 56506757 is 75760565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53787556 + 2719201 = 7334^2 + 1649^2 .

It is a cyclic number.

It is not a de Polignac number, because 56506757 - 2² = 56506753 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56506753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28253378 + 28253379.

It is an arithmetic number, because the mean of its divisors is an integer number (28253379).

Almost surely, 2^56506757 is an apocalyptic number.

It is an amenable number.

56506757 is a deficient number, since it is larger than the sum of its proper divisors (1).

56506757 is an equidigital number, since it uses as much as digits as its factorization.

56506757 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 56506757 is about 7517.0976447030. The cubic root of 56506757 is about 383.7368101229.

The spelling of 56506757 in words is "fifty-six million, five hundred six thousand, seven hundred fifty-seven".