516115949 has 2 divisors, whose sum is σ = 516115950. Its totient is φ = 516115948.

The previous prime is 516115921. The next prime is 516116017. The reversal of 516115949 is 949511615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448168900 + 67947049 = 21170^2 + 8243^2 .

It is a cyclic number.

It is not a de Polignac number, because 516115949 - 2¹⁶ = 516050413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516115549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258057974 + 258057975.

It is an arithmetic number, because the mean of its divisors is an integer number (258057975).

Almost surely, 2^516115949 is an apocalyptic number.

It is an amenable number.

516115949 is a deficient number, since it is larger than the sum of its proper divisors (1).

516115949 is an equidigital number, since it uses as much as digits as its factorization.

516115949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 41.

The square root of 516115949 is about 22718.1854248969. The cubic root of 516115949 is about 802.1380045183.

The spelling of 516115949 in words is "five hundred sixteen million, one hundred fifteen thousand, nine hundred forty-nine".