2815045249 has 9 divisors (see below), whose sum is σ = 2991335241. Its totient is φ = 2648605440.

The previous prime is 2815045243. The next prime is 2815045271. The reversal of 2815045249 is 9425405182.

It is a happy number.

The square root of 2815045249 is 53057.

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

It can be written as a sum of positive squares in 4 ways, for example, as 565250625 + 2249794624 = 23775^2 + 47432^2 .

It is not a de Polignac number, because 2815045249 - 2⁵ = 2815045217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2815045243) 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, 900409 + ... + 903529.

Almost surely, 2^2815045249 is an apocalyptic number.

2815045249 is the 53057-th square number.

2815045249 is the 26529-th centered octagonal number.

It is an amenable number.

2815045249 is a deficient number, since it is larger than the sum of its proper divisors (176289992).

2815045249 is an frugal number, since it uses more digits than its factorization.

2815045249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276 (or 3138 counting only the distinct ones).

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

The cubic root of 2815045249 is about 1411.9797231170.

The spelling of 2815045249 in words is "two billion, eight hundred fifteen million, forty-five thousand, two hundred forty-nine".