516465449 has 2 divisors, whose sum is σ = 516465450. Its totient is φ = 516465448.

The previous prime is 516465371. The next prime is 516465463. The reversal of 516465449 is 944564615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272481049 + 243984400 = 16507^2 + 15620^2 .

It is a cyclic number.

It is not a de Polignac number, because 516465449 - 2⁸ = 516465193 is a prime.

It is not a weakly prime, because it can be changed into another prime (516465349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258232724 + 258232725.

It is an arithmetic number, because the mean of its divisors is an integer number (258232725).

Almost surely, 2^516465449 is an apocalyptic number.

It is an amenable number.

516465449 is a deficient number, since it is larger than the sum of its proper divisors (1).

516465449 is an equidigital number, since it uses as much as digits as its factorization.

516465449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 44.

The square root of 516465449 is about 22725.8761987299. The cubic root of 516465449 is about 802.3190258409.

The spelling of 516465449 in words is "five hundred sixteen million, four hundred sixty-five thousand, four hundred forty-nine".