516343257 has 6 divisors (see below), whose sum is σ = 745829162. Its totient is φ = 344228832.

The previous prime is 516343241. The next prime is 516343271. The reversal of 516343257 is 752343615.

It can be written as a sum of positive squares in only one way, i.e., 323244441 + 193098816 = 17979^2 + 13896^2 .

It is not a de Polignac number, because 516343257 - 2⁴ = 516343241 is a prime.

It is a super-2 number, since 2×516343257² = 533220718098736098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516343757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28685728 + ... + 28685745.

Almost surely, 2^516343257 is an apocalyptic number.

It is an amenable number.

516343257 is a deficient number, since it is larger than the sum of its proper divisors (229485905).

516343257 is a wasteful number, since it uses less digits than its factorization.

516343257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57371479 (or 57371476 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 516343257 is about 22723.1876505036. The cubic root of 516343257 is about 802.2557465520.

The spelling of 516343257 in words is "five hundred sixteen million, three hundred forty-three thousand, two hundred fifty-seven".