531250 has 28 divisors (see below), whose sum is σ = 1054674. Its totient is φ = 200000.

The previous prime is 531239. The next prime is 531253. The reversal of 531250 is 52135.

It can be written as a sum of positive squares in 7 ways, for example, as 205209 + 326041 = 453^2 + 571^2 .

It is a nialpdrome in base 14.

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 13 ways as a sum of consecutive naturals, for example, 31242 + ... + 31258.

2⁵³¹²⁵⁰ is an apocalyptic number.

531250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

531250 is a deficient number, since it is larger than the sum of its proper divisors (523424).

531250 is an frugal number, since it uses more digits than its factorization.

531250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 531250 is about 728.8689868557. The cubic root of 531250 is about 80.9902950319.

Adding to 531250 its reverse (52135), we get a palindrome (583385).

The spelling of 531250 in words is "five hundred thirty-one thousand, two hundred fifty".