531273 has 4 divisors (see below), whose sum is σ = 708368. Its totient is φ = 354180.

The previous prime is 531263. The next prime is 531281. The reversal of 531273 is 372135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 531273 - 2⁸ = 531017 is a prime.

It is a d-powerful number, because it can be written as 5⁵ + 3⁶ + 2¹⁹ + 1 + 7⁴ + 3⁶ .

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14 and base 15.

It is not an unprimeable number, because it can be changed into a prime (531203) 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, 88543 + ... + 88548.

It is an arithmetic number, because the mean of its divisors is an integer number (177092).

2⁵³¹²⁷³ is an apocalyptic number.

It is an amenable number.

531273 is a deficient number, since it is larger than the sum of its proper divisors (177095).

531273 is a wasteful number, since it uses less digits than its factorization.

531273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177094.

The product of its digits is 630, while the sum is 21.

The square root of 531273 is about 728.8847645547. The cubic root of 531273 is about 80.9914638162.

It can be divided in two parts, 53 and 1273, that added together give a triangular number (1326 = T₅₁).

The spelling of 531273 in words is "five hundred thirty-one thousand, two hundred seventy-three".