531495 has 32 divisors (see below), whose sum is σ = 983040. Its totient is φ = 272160.

The previous prime is 531481. The next prime is 531497. The reversal of 531495 is 594135.

It is not a de Polignac number, because 531495 - 2⁸ = 531239 is a prime.

It is a super-3 number, since 3×531495³ = 450421180593337125, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 5 + 3³ + 4² + 1 + 9⁶ + 5 .

It is a plaindrome in base 11.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4122 + ... + 4248.

It is an arithmetic number, because the mean of its divisors is an integer number (30720).

531495 is a Friedman number, since it can be written as 54+9^(5+1^3), using all its digits and the basic arithmetic operations.

2⁵³¹⁴⁹⁵ is an apocalyptic number.

531495 is a deficient number, since it is larger than the sum of its proper divisors (451545).

531495 is a wasteful number, since it uses less digits than its factorization.

531495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 166 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 531495 is about 729.0370360962. The cubic root of 531495 is about 81.0027433913.

The spelling of 531495 in words is "five hundred thirty-one thousand, four hundred ninety-five".