531917 has 4 divisors (see below), whose sum is σ = 533856. Its totient is φ = 529980.

The previous prime is 531911. The next prime is 531919. The reversal of 531917 is 719135.

531917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 719135 = 5 ⋅143827.

It is a cyclic number.

It is not a de Polignac number, because 531917 - 2⁴ = 531901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 531917.

It is not an unprimeable number, because it can be changed into a prime (531911) 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, 473 + ... + 1134.

It is an arithmetic number, because the mean of its divisors is an integer number (133464).

2⁵³¹⁹¹⁷ is an apocalyptic number.

It is an amenable number.

531917 is a deficient number, since it is larger than the sum of its proper divisors (1939).

531917 is a wasteful number, since it uses less digits than its factorization.

531917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938.

The product of its digits is 945, while the sum is 26.

The square root of 531917 is about 729.3264015515. The cubic root of 531917 is about 81.0241760888.

The spelling of 531917 in words is "five hundred thirty-one thousand, nine hundred seventeen".