2556122430 has 64 divisors (see below), whose sum is σ = 6346206720. Its totient is φ = 658399104.

The previous prime is 2556122423. The next prime is 2556122449. The reversal of 2556122430 is 342216552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 146007 + ... + 162573.

It is an arithmetic number, because the mean of its divisors is an integer number (99159480).

Almost surely, 2^2556122430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556122430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3173103360).

2556122430 is an abundant number, since it is smaller than the sum of its proper divisors (3790084290).

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

2556122430 is a wasteful number, since it uses less digits than its factorization.

2556122430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16753.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2556122430 is about 50558.1094385461. The cubic root of 2556122430 is about 1367.2897258868.

Adding to 2556122430 its reverse (342216552), we get a palindrome (2898338982).

It can be divided in two parts, 2556122 and 430, that added together give a palindrome (2556552).

The spelling of 2556122430 in words is "two billion, five hundred fifty-six million, one hundred twenty-two thousand, four hundred thirty".