531969 has 4 divisors (see below), whose sum is σ = 709296. Its totient is φ = 354644.

The previous prime is 531919. The next prime is 531977. The reversal of 531969 is 969135.

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 a cyclic number.

It is not a de Polignac number, because 531969 - 2⁷ = 531841 is a prime.

It is a super-2 number, since 2×531969² = 565982033922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (531919) 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, 88659 + ... + 88664.

It is an arithmetic number, because the mean of its divisors is an integer number (177324).

2⁵³¹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

531969 is a deficient number, since it is larger than the sum of its proper divisors (177327).

531969 is a wasteful number, since it uses less digits than its factorization.

531969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177326.

The product of its digits is 7290, while the sum is 33.

The square root of 531969 is about 729.3620500136. The cubic root of 531969 is about 81.0268163002.

The spelling of 531969 in words is "five hundred thirty-one thousand, nine hundred sixty-nine".