250531 has 8 divisors (see below), whose sum is σ = 265680. Its totient is φ = 235872.

The previous prime is 250501. The next prime is 250543. The reversal of 250531 is 135052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250531 - 2⁵ = 250499 is a prime.

It is a super-2 number, since 2×250531² = 125531563922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250501) 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, 1456 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (33210).

2²⁵⁰⁵³¹ is an apocalyptic number.

250531 is a deficient number, since it is larger than the sum of its proper divisors (15149).

250531 is a wasteful number, since it uses less digits than its factorization.

250531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

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

The square root of 250531 is about 500.5307183380. The cubic root of 250531 is about 63.0406221595.

Adding to 250531 its reverse (135052), we get a palindrome (385583).

The spelling of 250531 in words is "two hundred fifty thousand, five hundred thirty-one".