515448049 has 2 divisors, whose sum is σ = 515448050. Its totient is φ = 515448048.

The previous prime is 515448047. The next prime is 515448079. The reversal of 515448049 is 940844515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426711649 + 88736400 = 20657^2 + 9420^2 .

It is a cyclic number.

It is not a de Polignac number, because 515448049 - 2¹ = 515448047 is a prime.

Together with 515448047, 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 (515448047) 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 as a sum of consecutive naturals, namely, 257724024 + 257724025.

It is an arithmetic number, because the mean of its divisors is an integer number (257724025).

Almost surely, 2^515448049 is an apocalyptic number.

It is an amenable number.

515448049 is a deficient number, since it is larger than the sum of its proper divisors (1).

515448049 is an equidigital number, since it uses as much as digits as its factorization.

515448049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 515448049 is about 22703.4809886061. The cubic root of 515448049 is about 801.7918424834.

The spelling of 515448049 in words is "five hundred fifteen million, four hundred forty-eight thousand, forty-nine".