5431891 has 16 divisors (see below), whose sum is σ = 6168960. Its totient is φ = 4752000.

The previous prime is 5431873. The next prime is 5431939. The reversal of 5431891 is 1981345.

It is a cyclic number.

It is not a de Polignac number, because 5431891 - 2⁷ = 5431763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5431801) 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 15 ways as a sum of consecutive naturals, for example, 21516 + ... + 21766.

It is an arithmetic number, because the mean of its divisors is an integer number (385560).

Almost surely, 2^5431891 is an apocalyptic number.

5431891 is a deficient number, since it is larger than the sum of its proper divisors (737069).

5431891 is a wasteful number, since it uses less digits than its factorization.

5431891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354.

The product of its digits is 4320, while the sum is 31.

The square root of 5431891 is about 2330.6417571133. The cubic root of 5431891 is about 175.7857564402.

The spelling of 5431891 in words is "five million, four hundred thirty-one thousand, eight hundred ninety-one".