531525 has 24 divisors (see below), whose sum is σ = 927520. Its totient is φ = 267840.

The previous prime is 531521. The next prime is 531547. The reversal of 531525 is 525135.

It is not a de Polignac number, because 531525 - 2² = 531521 is a prime.

It is a d-powerful number, because it can be written as 5² + 3¹² + 5² + 1 + 2³ + 5² .

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 (531521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1239 + ... + 1611.

2⁵³¹⁵²⁵ is an apocalyptic number.

It is an amenable number.

531525 is a deficient number, since it is larger than the sum of its proper divisors (395995).

531525 is a wasteful number, since it uses less digits than its factorization.

531525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 400 counting only the distinct ones).

The product of its digits is 750, while the sum is 21.

The square root of 531525 is about 729.0576108923. The cubic root of 531525 is about 81.0042674173.

The spelling of 531525 in words is "five hundred thirty-one thousand, five hundred twenty-five".