515011475449 has 9 divisors (see below), whose sum is σ = 526236773167. Its totient is φ = 504020772904.

The previous prime is 515011475357. The next prime is 515011475471. The reversal of 515011475449 is 944574110515.

The square root of 515011475449 is 717643.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 232944265449 + 282067210000 = 482643^2 + 531100^2 .

It is not a de Polignac number, because 515011475449 - 2³³ = 506421540857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 515011475399 and 515011475408.

It is not an unprimeable number, because it can be changed into a prime (515011479449) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33721587 + ... + 33736855.

Almost surely, 2^515011475449 is an apocalyptic number.

515011475449 is the 717643-rd square number.

515011475449 is the 358822-nd centered octagonal number.

It is an amenable number.

515011475449 is a deficient number, since it is larger than the sum of its proper divisors (11225297718).

515011475449 is an frugal number, since it uses more digits than its factorization.

515011475449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30632 (or 15316 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 515011475449 in words is "five hundred fifteen billion, eleven million, four hundred seventy-five thousand, four hundred forty-nine".