5291491631 has 2 divisors, whose sum is σ = 5291491632. Its totient is φ = 5291491630.

The previous prime is 5291491627. The next prime is 5291491633. The reversal of 5291491631 is 1361941925.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5291491631 - 2² = 5291491627 is a prime.

It is a super-2 number, since 2×5291491631² = 55999767361886080322, which contains 22 as substring.

Together with 5291491633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5291491633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2645745815 + 2645745816.

It is an arithmetic number, because the mean of its divisors is an integer number (2645745816).

Almost surely, 2^5291491631 is an apocalyptic number.

5291491631 is a deficient number, since it is larger than the sum of its proper divisors (1).

5291491631 is an equidigital number, since it uses as much as digits as its factorization.

5291491631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 5291491631 is about 72742.6397032717. The cubic root of 5291491631 is about 1742.5799169482.

The spelling of 5291491631 in words is "five billion, two hundred ninety-one million, four hundred ninety-one thousand, six hundred thirty-one".