513600491 has 2 divisors, whose sum is σ = 513600492. Its totient is φ = 513600490.

The previous prime is 513600463. The next prime is 513600499. The reversal of 513600491 is 194006315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513600491 - 2¹⁰ = 513599467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (513600499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256800245 + 256800246.

It is an arithmetic number, because the mean of its divisors is an integer number (256800246).

Almost surely, 2^513600491 is an apocalyptic number.

513600491 is a deficient number, since it is larger than the sum of its proper divisors (1).

513600491 is an equidigital number, since it uses as much as digits as its factorization.

513600491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 513600491 is about 22662.7555914986. The cubic root of 513600491 is about 800.8327219794.

The spelling of 513600491 in words is "five hundred thirteen million, six hundred thousand, four hundred ninety-one".