5731491 has 8 divisors (see below), whose sum is σ = 7660224. Its totient is φ = 3811880.

The previous prime is 5731487. The next prime is 5731519. The reversal of 5731491 is 1941375.

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

It is a cyclic number.

It is not a de Polignac number, because 5731491 - 2² = 5731487 is a prime.

5731491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5731421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645 + ... + 3446.

It is an arithmetic number, because the mean of its divisors is an integer number (957528).

Almost surely, 2^5731491 is an apocalyptic number.

5731491 is a deficient number, since it is larger than the sum of its proper divisors (1928733).

5731491 is a wasteful number, since it uses less digits than its factorization.

5731491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561.

The product of its digits is 3780, while the sum is 30.

The square root of 5731491 is about 2394.0532575530. The cubic root of 5731491 is about 178.9599590015.

The spelling of 5731491 in words is "five million, seven hundred thirty-one thousand, four hundred ninety-one".