2556212113 has 16 divisors (see below), whose sum is σ = 3161939200. Its totient is φ = 2012319936.

The previous prime is 2556212069. The next prime is 2556212149. The reversal of 2556212113 is 3112126552.

It is a cyclic number.

It is not a de Polignac number, because 2556212113 - 2⁹ = 2556211601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2556212513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52470 + ... + 88687.

It is an arithmetic number, because the mean of its divisors is an integer number (197621200).

Almost surely, 2^2556212113 is an apocalyptic number.

It is an amenable number.

2556212113 is a deficient number, since it is larger than the sum of its proper divisors (605727087).

2556212113 is a wasteful number, since it uses less digits than its factorization.

2556212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141376.

The product of its digits is 3600, while the sum is 28.

The square root of 2556212113 is about 50558.9963606874. The cubic root of 2556212113 is about 1367.3057164107.

Adding to 2556212113 its reverse (3112126552), we get a palindrome (5668338665).

It can be divided in two parts, 25562 and 12113, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 2556212113 in words is "two billion, five hundred fifty-six million, two hundred twelve thousand, one hundred thirteen".