2555807540 has 96 divisors (see below), whose sum is σ = 6676556544. Its totient is φ = 807413760.

The previous prime is 2555807539. The next prime is 2555807543. The reversal of 2555807540 is 457085552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555807543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22337 + ... + 74903.

It is an arithmetic number, because the mean of its divisors is an integer number (69547464).

Almost surely, 2^2555807540 is an apocalyptic number.

2555807540 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 2555807540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3338278272).

2555807540 is an abundant number, since it is smaller than the sum of its proper divisors (4120749004).

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

2555807540 is a wasteful number, since it uses less digits than its factorization.

2555807540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52617 (or 52615 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 41.

The square root of 2555807540 is about 50554.9952032438. The cubic root of 2555807540 is about 1367.2335778795.

The spelling of 2555807540 in words is "two billion, five hundred fifty-five million, eight hundred seven thousand, five hundred forty".