4571491 has 2 divisors, whose sum is σ = 4571492. Its totient is φ = 4571490.

The previous prime is 4571471. The next prime is 4571519. The reversal of 4571491 is 1941754.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4571491 - 2⁷ = 4571363 is a prime.

It is not a weakly prime, because it can be changed into another prime (4571471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2285745 + 2285746.

It is an arithmetic number, because the mean of its divisors is an integer number (2285746).

Almost surely, 2^4571491 is an apocalyptic number.

4571491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4571491 is an equidigital number, since it uses as much as digits as its factorization.

4571491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 4571491 is about 2138.1045343949. The cubic root of 4571491 is about 165.9660621577.

The spelling of 4571491 in words is "four million, five hundred seventy-one thousand, four hundred ninety-one".