531617 has 4 divisors (see below), whose sum is σ = 542976. Its totient is φ = 520260.

The previous prime is 531613. The next prime is 531623. The reversal of 531617 is 716135.

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 531617 - 2² = 531613 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 531592 and 531601.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 531617.

It is not an unprimeable number, because it can be changed into a prime (531611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5609 + ... + 5702.

It is an arithmetic number, because the mean of its divisors is an integer number (135744).

2⁵³¹⁶¹⁷ is an apocalyptic number.

It is an amenable number.

531617 is a deficient number, since it is larger than the sum of its proper divisors (11359).

531617 is a wasteful number, since it uses less digits than its factorization.

531617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358.

The product of its digits is 630, while the sum is 23.

The square root of 531617 is about 729.1207033132. The cubic root of 531617 is about 81.0089407395.

The spelling of 531617 in words is "five hundred thirty-one thousand, six hundred seventeen".