5691491 has 8 divisors (see below), whose sum is σ = 6158880. Its totient is φ = 5228352.

The previous prime is 5691487. The next prime is 5691493. The reversal of 5691491 is 1941965.

5691491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5691491 - 2² = 5691487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5691493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2090 + ... + 3968.

It is an arithmetic number, because the mean of its divisors is an integer number (769860).

Almost surely, 2^5691491 is an apocalyptic number.

5691491 is a deficient number, since it is larger than the sum of its proper divisors (467389).

5691491 is a wasteful number, since it uses less digits than its factorization.

5691491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125.

The product of its digits is 9720, while the sum is 35.

The square root of 5691491 is about 2385.6845977622. The cubic root of 5691491 is about 178.5426670021.

The spelling of 5691491 in words is "five million, six hundred ninety-one thousand, four hundred ninety-one".