5591731 has 4 divisors (see below), whose sum is σ = 5710752. Its totient is φ = 5472712.

The previous prime is 5591717. The next prime is 5591741. The reversal of 5591731 is 1371955.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5591731 - 2¹⁹ = 5067443 is a prime.

It is a super-2 number, since 2×5591731² = 62534911152722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5591693 and 5591702.

It is not an unprimeable number, because it can be changed into a prime (5591741) 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, 59440 + ... + 59533.

It is an arithmetic number, because the mean of its divisors is an integer number (1427688).

Almost surely, 2^5591731 is an apocalyptic number.

5591731 is a deficient number, since it is larger than the sum of its proper divisors (119021).

5591731 is a wasteful number, since it uses less digits than its factorization.

5591731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119020.

The product of its digits is 4725, while the sum is 31.

The square root of 5591731 is about 2364.6841226684. The cubic root of 5591731 is about 177.4933515992.

The spelling of 5591731 in words is "five million, five hundred ninety-one thousand, seven hundred thirty-one".