516157489 has 2 divisors, whose sum is σ = 516157490. Its totient is φ = 516157488.

The previous prime is 516157459. The next prime is 516157507. The reversal of 516157489 is 984751615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 433347489 + 82810000 = 20817^2 + 9100^2 .

It is a cyclic number.

It is not a de Polignac number, because 516157489 - 2²⁵ = 482603057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (516157459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258078744 + 258078745.

It is an arithmetic number, because the mean of its divisors is an integer number (258078745).

Almost surely, 2^516157489 is an apocalyptic number.

It is an amenable number.

516157489 is a deficient number, since it is larger than the sum of its proper divisors (1).

516157489 is an equidigital number, since it uses as much as digits as its factorization.

516157489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 46.

The square root of 516157489 is about 22719.0996520549. The cubic root of 516157489 is about 802.1595241780.

The spelling of 516157489 in words is "five hundred sixteen million, one hundred fifty-seven thousand, four hundred eighty-nine".