531517 has 4 divisors (see below), whose sum is σ = 607456. Its totient is φ = 455580.

The previous prime is 531497. The next prime is 531521. The reversal of 531517 is 715135.

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 531517 - 2¹⁵ = 498749 is a prime.

It is a Duffinian number.

531517 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531547) 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, 37959 + ... + 37972.

It is an arithmetic number, because the mean of its divisors is an integer number (151864).

2⁵³¹⁵¹⁷ is an apocalyptic number.

It is an amenable number.

531517 is a deficient number, since it is larger than the sum of its proper divisors (75939).

531517 is an equidigital number, since it uses as much as digits as its factorization.

531517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75938.

The product of its digits is 525, while the sum is 22.

The square root of 531517 is about 729.0521243368. The cubic root of 531517 is about 81.0038610160.

The spelling of 531517 in words is "five hundred thirty-one thousand, five hundred seventeen".