5391231 has 8 divisors (see below), whose sum is σ = 7566720. Its totient is φ = 3404952.

The previous prime is 5391209. The next prime is 5391247. The reversal of 5391231 is 1321935.

It is a happy number.

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

It is not a de Polignac number, because 5391231 - 2⁹ = 5390719 is a prime.

It is a super-2 number, since 2×5391231² = 58130743390722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5399231) 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, 47235 + ... + 47348.

It is an arithmetic number, because the mean of its divisors is an integer number (945840).

Almost surely, 2^5391231 is an apocalyptic number.

5391231 is the 1469-th centered pentagonal number.

5391231 is a deficient number, since it is larger than the sum of its proper divisors (2175489).

5391231 is a wasteful number, since it uses less digits than its factorization.

5391231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94605.

The product of its digits is 810, while the sum is 24.

The square root of 5391231 is about 2321.9024527314. The cubic root of 5391231 is about 175.3460472435.

It can be divided in two parts, 539 and 1231, that added together give a triangular number (1770 = T₅₉).

The spelling of 5391231 in words is "five million, three hundred ninety-one thousand, two hundred thirty-one".