5656217473 has 4 divisors (see below), whose sum is σ = 5666372820. Its totient is φ = 5646062128.

The previous prime is 5656217471. The next prime is 5656217551. The reversal of 5656217473 is 3747126565.

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 1643248369 + 4012969104 = 40537^2 + 63348^2 .

It is a cyclic number.

It is not a de Polignac number, because 5656217473 - 2¹ = 5656217471 is a prime.

It is a super-2 number, since 2×5656217473² = 63985592203741011458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5656217471) 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, 5076838 + ... + 5077951.

It is an arithmetic number, because the mean of its divisors is an integer number (1416593205).

Almost surely, 2^5656217473 is an apocalyptic number.

It is an amenable number.

5656217473 is a deficient number, since it is larger than the sum of its proper divisors (10155347).

5656217473 is a wasteful number, since it uses less digits than its factorization.

5656217473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10155346.

The product of its digits is 1058400, while the sum is 46.

The square root of 5656217473 is about 75207.8285353327. The cubic root of 5656217473 is about 1781.7305764296.

The spelling of 5656217473 in words is "five billion, six hundred fifty-six million, two hundred seventeen thousand, four hundred seventy-three".