531873 has 8 divisors (see below), whose sum is σ = 788000. Its totient is φ = 354564.

The previous prime is 531871. The next prime is 531877. The reversal of 531873 is 378135.

It is not a de Polignac number, because 531873 - 2¹ = 531871 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 19699 = 531873 / (5 + 3 + 1 + 8 + 7 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (531871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9823 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (98500).

2⁵³¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

531873 is a deficient number, since it is larger than the sum of its proper divisors (256127).

531873 is a wasteful number, since it uses less digits than its factorization.

531873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19708 (or 19702 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 531873 is about 729.2962361071. The cubic root of 531873 is about 81.0219419295.

It can be divided in two parts, 5 and 31873, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 531873 in words is "five hundred thirty-one thousand, eight hundred seventy-three".