5661056431 has 8 divisors (see below), whose sum is σ = 5758707600. Its totient is φ = 5563462080.

The previous prime is 5661056399. The next prime is 5661056459. The reversal of 5661056431 is 1346501665.

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 5661056431 - 2⁵ = 5661056399 is a prime.

It is a super-2 number, since 2×5661056431² = 64095119829932915522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661096431) 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, 219601 + ... + 244021.

It is an arithmetic number, because the mean of its divisors is an integer number (719838450).

Almost surely, 2^5661056431 is an apocalyptic number.

5661056431 is a deficient number, since it is larger than the sum of its proper divisors (97651169).

5661056431 is a wasteful number, since it uses less digits than its factorization.

5661056431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28409.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 5661056431 is about 75239.9922315254. The cubic root of 5661056431 is about 1782.2385284887.

The spelling of 5661056431 in words is "five billion, six hundred sixty-one million, fifty-six thousand, four hundred thirty-one".