56356517 has 12 divisors (see below), whose sum is σ = 65806956. Its totient is φ = 48121920.

The previous prime is 56356507. The next prime is 56356523. The reversal of 56356517 is 71565365.

It can be written as a sum of positive squares in 2 ways, for example, as 30813601 + 25542916 = 5551^2 + 5054^2 .

It is not a de Polignac number, because 56356517 - 2⁴ = 56356501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56356507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11723 + ... + 15815.

It is an arithmetic number, because the mean of its divisors is an integer number (5483913).

Almost surely, 2^56356517 is an apocalyptic number.

It is an amenable number.

56356517 is a deficient number, since it is larger than the sum of its proper divisors (9450439).

56356517 is a wasteful number, since it uses less digits than its factorization.

56356517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388 (or 4381 counting only the distinct ones).

The product of its digits is 94500, while the sum is 38.

The square root of 56356517 is about 7507.0977747729. The cubic root of 56356517 is about 383.3964154954.

The spelling of 56356517 in words is "fifty-six million, three hundred fifty-six thousand, five hundred seventeen".