56403517 has 2 divisors, whose sum is σ = 56403518. Its totient is φ = 56403516.

The previous prime is 56403511. The next prime is 56403541. The reversal of 56403517 is 71530465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38204761 + 18198756 = 6181^2 + 4266^2 .

It is a cyclic number.

It is not a de Polignac number, because 56403517 - 2¹⁵ = 56370749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56403511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28201758 + 28201759.

It is an arithmetic number, because the mean of its divisors is an integer number (28201759).

Almost surely, 2^56403517 is an apocalyptic number.

It is an amenable number.

56403517 is a deficient number, since it is larger than the sum of its proper divisors (1).

56403517 is an equidigital number, since it uses as much as digits as its factorization.

56403517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 56403517 is about 7510.2274932255. The cubic root of 56403517 is about 383.5029670562.

The spelling of 56403517 in words is "fifty-six million, four hundred three thousand, five hundred seventeen".