515719049 has 2 divisors, whose sum is σ = 515719050. Its totient is φ = 515719048.

The previous prime is 515718947. The next prime is 515719063. The reversal of 515719049 is 940917515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462895225 + 52823824 = 21515^2 + 7268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515719049 is a prime.

It is a super-2 number, since 2×515719049² = 531932275002928802, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 515718997 and 515719015.

It is not a weakly prime, because it can be changed into another prime (515719549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257859524 + 257859525.

It is an arithmetic number, because the mean of its divisors is an integer number (257859525).

Almost surely, 2^515719049 is an apocalyptic number.

It is an amenable number.

515719049 is a deficient number, since it is larger than the sum of its proper divisors (1).

515719049 is an equidigital number, since it uses as much as digits as its factorization.

515719049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 515719049 is about 22709.4484521311. The cubic root of 515719049 is about 801.9323335385.

The spelling of 515719049 in words is "five hundred fifteen million, seven hundred nineteen thousand, forty-nine".