515016049 has 4 divisors (see below), whose sum is σ = 518296564. Its totient is φ = 511735536.

The previous prime is 515016043. The next prime is 515016053. The reversal of 515016049 is 940610515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 232776049 + 282240000 = 15257^2 + 16800^2 .

It is a cyclic number.

It is not a de Polignac number, because 515016049 - 2³ = 515016041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 515016049.

It is not an unprimeable number, because it can be changed into a prime (515016041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1640022 + ... + 1640335.

It is an arithmetic number, because the mean of its divisors is an integer number (129574141).

Almost surely, 2^515016049 is an apocalyptic number.

It is an amenable number.

515016049 is a deficient number, since it is larger than the sum of its proper divisors (3280515).

515016049 is a wasteful number, since it uses less digits than its factorization.

515016049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280514.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 515016049 is about 22693.9650347840. The cubic root of 515016049 is about 801.5677844122.

The spelling of 515016049 in words is "five hundred fifteen million, sixteen thousand, forty-nine".