5811291 has 32 divisors (see below), whose sum is σ = 9123840. Its totient is φ = 3650400.

The previous prime is 5811241. The next prime is 5811301. The reversal of 5811291 is 1921185.

It is not a de Polignac number, because 5811291 - 2⁶ = 5811227 is a prime.

It is a super-2 number, since 2×5811291² = 67542206173362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5811241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44296 + ... + 44426.

It is an arithmetic number, because the mean of its divisors is an integer number (285120).

Almost surely, 2^5811291 is an apocalyptic number.

5811291 is a deficient number, since it is larger than the sum of its proper divisors (3312549).

5811291 is a wasteful number, since it uses less digits than its factorization.

5811291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 218 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 5811291 is about 2410.6619422889. The cubic root of 5811291 is about 179.7866917643.

The spelling of 5811291 in words is "five million, eight hundred eleven thousand, two hundred ninety-one".