2556513244 has 12 divisors (see below), whose sum is σ = 4737068784. Its totient is φ = 1203065024.

The previous prime is 2556513203. The next prime is 2556513269. The reversal of 2556513244 is 4423156552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18797824 + ... + 18797959.

It is an arithmetic number, because the mean of its divisors is an integer number (394755732).

Almost surely, 2^2556513244 is an apocalyptic number.

It is an amenable number.

2556513244 is a deficient number, since it is larger than the sum of its proper divisors (2180555540).

2556513244 is a wasteful number, since it uses less digits than its factorization.

2556513244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37595804 (or 37595802 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The square root of 2556513244 is about 50561.9742889852. The cubic root of 2556513244 is about 1367.3594054830.

Adding to 2556513244 its reverse (4423156552), we get a palindrome (6979669796).

It can be divided in two parts, 25565 and 13244, that added together give a square (38809 = 197²).

The spelling of 2556513244 in words is "two billion, five hundred fifty-six million, five hundred thirteen thousand, two hundred forty-four".