531297 has 24 divisors (see below), whose sum is σ = 873600. Its totient is φ = 308448.

The previous prime is 531287. The next prime is 531299. The reversal of 531297 is 792135.

It is not a de Polignac number, because 531297 - 2⁴ = 531281 is a prime.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 531297.

It is not an unprimeable number, because it can be changed into a prime (531299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2104 + ... + 2342.

It is an arithmetic number, because the mean of its divisors is an integer number (36400).

531297 is a Friedman number, since it can be written as 9321*57, using all its digits and the basic arithmetic operations.

2⁵³¹²⁹⁷ is an apocalyptic number.

531297 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

531297 is a deficient number, since it is larger than the sum of its proper divisors (342303).

531297 is a wasteful number, since it uses less digits than its factorization.

531297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 274 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 531297 is about 728.9012278766. The cubic root of 531297 is about 80.9926833812.

It can be divided in two parts, 531 and 297, that added together give a palindrome (828).

The spelling of 531297 in words is "five hundred thirty-one thousand, two hundred ninety-seven".