531965 has 8 divisors (see below), whose sum is σ = 729600. Its totient is φ = 364752.

The previous prime is 531919. The next prime is 531977. The reversal of 531965 is 569135.

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 531965 - 2⁶ = 531901 is a prime.

It is a super-2 number, since 2×531965² = 565973522450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7565 + ... + 7634.

It is an arithmetic number, because the mean of its divisors is an integer number (91200).

2⁵³¹⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

531965 is a deficient number, since it is larger than the sum of its proper divisors (197635).

531965 is a wasteful number, since it uses less digits than its factorization.

531965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15211.

The product of its digits is 4050, while the sum is 29.

The square root of 531965 is about 729.3593078860. The cubic root of 531965 is about 81.0266132131.

The spelling of 531965 in words is "five hundred thirty-one thousand, nine hundred sixty-five".