2556231120 has 120 divisors (see below), whose sum is σ = 9036549600. Its totient is φ = 645781248.

The previous prime is 2556231113. The next prime is 2556231121. The reversal of 2556231120 is 211326552.

It is a happy number.

2556231120 is a `hidden beast` number, since 2 + 5 + 5 + 623 + 11 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556231121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79750 + ... + 107109.

It is an arithmetic number, because the mean of its divisors is an integer number (75304580).

Almost surely, 2^2556231120 is an apocalyptic number.

2556231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2556231120 is an abundant number, since it is smaller than the sum of its proper divisors (6480318480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556231120 is a wasteful number, since it uses less digits than its factorization.

2556231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186897 (or 186888 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2556231120 is about 50559.1843288635. The cubic root of 2556231120 is about 1367.3091053203.

Adding to 2556231120 its reverse (211326552), we get a palindrome (2767557672).

The spelling of 2556231120 in words is "two billion, five hundred fifty-six million, two hundred thirty-one thousand, one hundred twenty".