56517773 has 4 divisors (see below), whose sum is σ = 60865308. Its totient is φ = 52170240.

The previous prime is 56517763. The next prime is 56517821. The reversal of 56517773 is 37771565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24730729 + 31787044 = 4973^2 + 5638^2 .

It is a cyclic number.

It is not a de Polignac number, because 56517773 - 2⁴ = 56517757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56517773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56517733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173748 + ... + 2173773.

It is an arithmetic number, because the mean of its divisors is an integer number (15216327).

Almost surely, 2^56517773 is an apocalyptic number.

It is an amenable number.

56517773 is a deficient number, since it is larger than the sum of its proper divisors (4347535).

56517773 is a wasteful number, since it uses less digits than its factorization.

56517773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347534.

The product of its digits is 154350, while the sum is 41.

The square root of 56517773 is about 7517.8303386017. The cubic root of 56517773 is about 383.7617450171.

The spelling of 56517773 in words is "fifty-six million, five hundred seventeen thousand, seven hundred seventy-three".