2555100 has 108 divisors (see below), whose sum is σ = 8530704. Its totient is φ = 637440.

The previous prime is 2555099. The next prime is 2555123. The reversal of 2555100 is 15552.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15217 + ... + 15383.

It is an arithmetic number, because the mean of its divisors is an integer number (78988).

2^2555100 is an apocalyptic number.

2555100 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 2555100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4265352).

2555100 is an abundant number, since it is smaller than the sum of its proper divisors (5975604).

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

2555100 is a wasteful number, since it uses less digits than its factorization.

2555100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 2555100 is about 1598.4680165709. The cubic root of 2555100 is about 136.7107399661.

The spelling of 2555100 in words is "two million, five hundred fifty-five thousand, one hundred".