5591806631 has 2 divisors, whose sum is σ = 5591806632. Its totient is φ = 5591806630.

The previous prime is 5591806603. The next prime is 5591806673. The reversal of 5591806631 is 1366081955.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5591806631 is a prime.

It is a super-2 number, since 2×5591806631² = 62536602796991140322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5591806601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795903315 + 2795903316.

It is an arithmetic number, because the mean of its divisors is an integer number (2795903316).

Almost surely, 2^5591806631 is an apocalyptic number.

5591806631 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591806631 is an equidigital number, since it uses as much as digits as its factorization.

5591806631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 5591806631 is about 74778.3834473573. The cubic root of 5591806631 is about 1774.9415182478.

The spelling of 5591806631 in words is "five billion, five hundred ninety-one million, eight hundred six thousand, six hundred thirty-one".