5271231 has 16 divisors (see below), whose sum is σ = 8113664. Its totient is φ = 2981664.

The previous prime is 5271223. The next prime is 5271281. The reversal of 5271231 is 1321725.

5271231 = 46² + 47² + ... + 251².

It is not a de Polignac number, because 5271231 - 2³ = 5271223 is a prime.

It is a super-2 number, since 2×5271231² = 55571752510722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5271198 and 5271207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5271281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (507104).

Almost surely, 2^5271231 is an apocalyptic number.

5271231 is a deficient number, since it is larger than the sum of its proper divisors (2842433).

5271231 is a wasteful number, since it uses less digits than its factorization.

5271231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550.

The product of its digits is 420, while the sum is 21.

The square root of 5271231 is about 2295.9161570057. The cubic root of 5271231 is about 174.0353013327.

Adding to 5271231 its reverse (1321725), we get a palindrome (6592956).

The spelling of 5271231 in words is "five million, two hundred seventy-one thousand, two hundred thirty-one".