513490897 has 2 divisors, whose sum is σ = 513490898. Its totient is φ = 513490896.

The previous prime is 513490891. The next prime is 513490919. The reversal of 513490897 is 798094315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306390016 + 207100881 = 17504^2 + 14391^2 .

It is a cyclic number.

It is not a de Polignac number, because 513490897 - 2³ = 513490889 is a prime.

It is not a weakly prime, because it can be changed into another prime (513490891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256745448 + 256745449.

It is an arithmetic number, because the mean of its divisors is an integer number (256745449).

Almost surely, 2^513490897 is an apocalyptic number.

It is an amenable number.

513490897 is a deficient number, since it is larger than the sum of its proper divisors (1).

513490897 is an equidigital number, since it uses as much as digits as its factorization.

513490897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 513490897 is about 22660.3375305841. The cubic root of 513490897 is about 800.7757563636.

The spelling of 513490897 in words is "five hundred thirteen million, four hundred ninety thousand, eight hundred ninety-seven".