2518249 has 4 divisors (see below), whose sum is σ = 2535300. Its totient is φ = 2501200.

The previous prime is 2518237. The next prime is 2518259. The reversal of 2518249 is 9428152.

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 1671849 + 846400 = 1293^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2518249 - 2⁷ = 2518121 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2518249.

It is not an unprimeable number, because it can be changed into a prime (2518259) 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, 8302 + ... + 8599.

It is an arithmetic number, because the mean of its divisors is an integer number (633825).

2^2518249 is an apocalyptic number.

It is an amenable number.

2518249 is a deficient number, since it is larger than the sum of its proper divisors (17051).

2518249 is a wasteful number, since it uses less digits than its factorization.

2518249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17050.

The product of its digits is 5760, while the sum is 31.

The square root of 2518249 is about 1586.8991776417. The cubic root of 2518249 is about 136.0503165894.

Subtracting 2518249 from its reverse (9428152), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2518249 in words is "two million, five hundred eighteen thousand, two hundred forty-nine".