513650957 has 2 divisors, whose sum is σ = 513650958. Its totient is φ = 513650956.

The previous prime is 513650947. The next prime is 513650981. The reversal of 513650957 is 759056315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 463368676 + 50282281 = 21526^2 + 7091^2 .

It is a cyclic number.

It is not a de Polignac number, because 513650957 - 2⁴ = 513650941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513650947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256825478 + 256825479.

It is an arithmetic number, because the mean of its divisors is an integer number (256825479).

Almost surely, 2^513650957 is an apocalyptic number.

It is an amenable number.

513650957 is a deficient number, since it is larger than the sum of its proper divisors (1).

513650957 is an equidigital number, since it uses as much as digits as its factorization.

513650957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 41.

The square root of 513650957 is about 22663.8689768539. The cubic root of 513650957 is about 800.8589508617.

The spelling of 513650957 in words is "five hundred thirteen million, six hundred fifty thousand, nine hundred fifty-seven".