2513243 has 4 divisors (see below), whose sum is σ = 2516568. Its totient is φ = 2509920.

The previous prime is 2513209. The next prime is 2513249. The reversal of 2513243 is 3423152.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2513243 - 2⁶ = 2513179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2513249) 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, 83 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (629142).

2^2513243 is an apocalyptic number.

2513243 is a deficient number, since it is larger than the sum of its proper divisors (3325).

2513243 is a wasteful number, since it uses less digits than its factorization.

2513243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324.

The product of its digits is 720, while the sum is 20.

The square root of 2513243 is about 1585.3211031208. The cubic root of 2513243 is about 135.9601058015.

Adding to 2513243 its reverse (3423152), we get a palindrome (5936395).

Subtracting 2513243 from its reverse (3423152), we obtain a palindrome (909909).

The spelling of 2513243 in words is "two million, five hundred thirteen thousand, two hundred forty-three".