56277517 has 2 divisors, whose sum is σ = 56277518. Its totient is φ = 56277516.

The previous prime is 56277491. The next prime is 56277523. The reversal of 56277517 is 71577265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54375876 + 1901641 = 7374^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 56277517 - 2²³ = 47888909 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56277517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56277547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28138758 + 28138759.

It is an arithmetic number, because the mean of its divisors is an integer number (28138759).

Almost surely, 2^56277517 is an apocalyptic number.

It is an amenable number.

56277517 is a deficient number, since it is larger than the sum of its proper divisors (1).

56277517 is an equidigital number, since it uses as much as digits as its factorization.

56277517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102900, while the sum is 40.

The square root of 56277517 is about 7501.8342423703. The cubic root of 56277517 is about 383.2171846387.

The spelling of 56277517 in words is "fifty-six million, two hundred seventy-seven thousand, five hundred seventeen".