5656122561 has 8 divisors (see below), whose sum is σ = 7801548480. Its totient is φ = 3640722512.

The previous prime is 5656122539. The next prime is 5656122587. The reversal of 5656122561 is 1652216565.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5656122561 - 2²² = 5651928257 is a prime.

It is a super-3 number, since 3×5656122561³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5656122961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32506365 + ... + 32506538.

It is an arithmetic number, because the mean of its divisors is an integer number (975193560).

Almost surely, 2^5656122561 is an apocalyptic number.

It is an amenable number.

5656122561 is a deficient number, since it is larger than the sum of its proper divisors (2145425919).

5656122561 is a wasteful number, since it uses less digits than its factorization.

5656122561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65012935.

The product of its digits is 108000, while the sum is 39.

The square root of 5656122561 is about 75207.1975345445. The cubic root of 5656122561 is about 1781.7206104904.

The spelling of 5656122561 in words is "five billion, six hundred fifty-six million, one hundred twenty-two thousand, five hundred sixty-one".