5591131 has 8 divisors (see below), whose sum is σ = 6881504. Its totient is φ = 4423680.

The previous prime is 5591123. The next prime is 5591137. The reversal of 5591131 is 1311955.

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

It is a 15-Lehmer number, since φ(5591131) divides (5591131-1)¹⁵.

It is a cyclic number.

It is not a de Polignac number, because 5591131 - 2³ = 5591123 is a prime.

It is a super-2 number, since 2×5591131² = 62521491718322, which contains 22 as substring.

5591131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5591096 and 5591105.

It is not an unprimeable number, because it can be changed into a prime (5591137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30630 + ... + 30811.

It is an arithmetic number, because the mean of its divisors is an integer number (860188).

Almost surely, 2^5591131 is an apocalyptic number.

5591131 is a deficient number, since it is larger than the sum of its proper divisors (1290373).

5591131 is a wasteful number, since it uses less digits than its factorization.

5591131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61461.

The product of its digits is 675, while the sum is 25.

The square root of 5591131 is about 2364.5572524259. The cubic root of 5591131 is about 177.4870029497.

The spelling of 5591131 in words is "five million, five hundred ninety-one thousand, one hundred thirty-one".