531256 has 16 divisors (see below), whose sum is σ = 1086840. Its totient is φ = 241440.

The previous prime is 531253. The next prime is 531263. The reversal of 531256 is 652135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 9 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2931 + ... + 3106.

2⁵³¹²⁵⁶ is an apocalyptic number.

It is an amenable number.

531256 is an abundant number, since it is smaller than the sum of its proper divisors (555584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531256 is a wasteful number, since it uses less digits than its factorization.

531256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054 (or 6050 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 531256 is about 728.8731028101. The cubic root of 531256 is about 80.9905999354.

It can be divided in two parts, 531 and 256, that added together give a palindrome (787).

The spelling of 531256 in words is "five hundred thirty-one thousand, two hundred fifty-six".