512531 has 2 divisors, whose sum is σ = 512532. Its totient is φ = 512530.

The previous prime is 512521. The next prime is 512537. The reversal of 512531 is 135215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512531 - 2⁶ = 512467 is a prime.

It is a super-2 number, since 2×512531² = 525376051922, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 512531.

It is not a weakly prime, because it can be changed into another prime (512537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256265 + 256266.

It is an arithmetic number, because the mean of its divisors is an integer number (256266).

2⁵¹²⁵³¹ is an apocalyptic number.

512531 is a deficient number, since it is larger than the sum of its proper divisors (1).

512531 is an equidigital number, since it uses as much as digits as its factorization.

512531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150, while the sum is 17.

The square root of 512531 is about 715.9127041756. The cubic root of 512531 is about 80.0276466947.

Adding to 512531 its reverse (135215), we get a palindrome (647746).

The spelling of 512531 in words is "five hundred twelve thousand, five hundred thirty-one".