2555774520 has 128 divisors (see below), whose sum is σ = 8274147840. Its totient is φ = 627816960.

The previous prime is 2555774497. The next prime is 2555774549. The reversal of 2555774520 is 254775552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 914325 + ... + 917115.

It is an arithmetic number, because the mean of its divisors is an integer number (64641780).

Almost surely, 2^2555774520 is an apocalyptic number.

2555774520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2555774520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4137073920).

2555774520 is an abundant number, since it is smaller than the sum of its proper divisors (5718373320).

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

2555774520 is a wasteful number, since it uses less digits than its factorization.

2555774520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 490000, while the sum is 42.

The square root of 2555774520 is about 50554.6686271407. The cubic root of 2555774520 is about 1367.2276898192.

It can be divided in two parts, 255 and 5774520, that added together give a palindrome (5774775).

The spelling of 2555774520 in words is "two billion, five hundred fifty-five million, seven hundred seventy-four thousand, five hundred twenty".