513873497 has 2 divisors, whose sum is σ = 513873498. Its totient is φ = 513873496.

The previous prime is 513873463. The next prime is 513873509. The reversal of 513873497 is 794378315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313254601 + 200618896 = 17699^2 + 14164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513873497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (513873457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256936748 + 256936749.

It is an arithmetic number, because the mean of its divisors is an integer number (256936749).

Almost surely, 2^513873497 is an apocalyptic number.

It is an amenable number.

513873497 is a deficient number, since it is larger than the sum of its proper divisors (1).

513873497 is an equidigital number, since it uses as much as digits as its factorization.

513873497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 513873497 is about 22668.7780217638. The cubic root of 513873497 is about 800.9745919186.

The spelling of 513873497 in words is "five hundred thirteen million, eight hundred seventy-three thousand, four hundred ninety-seven".