516353489 has 2 divisors, whose sum is σ = 516353490. Its totient is φ = 516353488.

The previous prime is 516353363. The next prime is 516353491. The reversal of 516353489 is 984353615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316555264 + 199798225 = 17792^2 + 14135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516353489 is a prime.

Together with 516353491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (516350489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258176744 + 258176745.

It is an arithmetic number, because the mean of its divisors is an integer number (258176745).

Almost surely, 2^516353489 is an apocalyptic number.

It is an amenable number.

516353489 is a deficient number, since it is larger than the sum of its proper divisors (1).

516353489 is an equidigital number, since it uses as much as digits as its factorization.

516353489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 44.

The square root of 516353489 is about 22723.4127938565. The cubic root of 516353489 is about 802.2610457572.

The spelling of 516353489 in words is "five hundred sixteen million, three hundred fifty-three thousand, four hundred eighty-nine".