2555707920 has 120 divisors (see below), whose sum is σ = 8416377984. Its totient is φ = 641415168.

The previous prime is 2555707909. The next prime is 2555707943. The reversal of 2555707920 is 297075552.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50937 + ... + 87783.

Almost surely, 2^2555707920 is an apocalyptic number.

2555707920 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 2555707920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4208188992).

2555707920 is an abundant number, since it is smaller than the sum of its proper divisors (5860670064).

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

2555707920 is a wasteful number, since it uses less digits than its factorization.

2555707920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36897 (or 36874 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 42.

The square root of 2555707920 is about 50554.0099299749. The cubic root of 2555707920 is about 1367.2158136861.

The spelling of 2555707920 in words is "two billion, five hundred fifty-five million, seven hundred seven thousand, nine hundred twenty".