513073531 has 2 divisors, whose sum is σ = 513073532. Its totient is φ = 513073530.

The previous prime is 513073507. The next prime is 513073553. The reversal of 513073531 is 135370315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513073531 - 2¹⁵ = 513040763 is a prime.

It is a super-2 number, since 2×513073531² = 526488896425615922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 513073531.

It is not a weakly prime, because it can be changed into another prime (513073831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256536765 + 256536766.

It is an arithmetic number, because the mean of its divisors is an integer number (256536766).

Almost surely, 2^513073531 is an apocalyptic number.

513073531 is a deficient number, since it is larger than the sum of its proper divisors (1).

513073531 is an equidigital number, since it uses as much as digits as its factorization.

513073531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725, while the sum is 28.

The square root of 513073531 is about 22651.1264841288. The cubic root of 513073531 is about 800.5587403998.

The spelling of 513073531 in words is "five hundred thirteen million, seventy-three thousand, five hundred thirty-one".