2521860 has 48 divisors (see below), whose sum is σ = 7705152. Its totient is φ = 611200.

The previous prime is 2521847. The next prime is 2521901. The reversal of 2521860 is 681252.

It is a self number, because there is not a number n which added to its sum of digits gives 2521860.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1251 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (160524).

2^2521860 is an apocalyptic number.

2521860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521860 is an abundant number, since it is smaller than the sum of its proper divisors (5183292).

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

2521860 is a wasteful number, since it uses less digits than its factorization.

2521860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2521860 is about 1588.0365235095. The cubic root of 2521860 is about 136.1153145385.

It can be divided in two parts, 252 and 1860, that added together give a palindrome (2112).

The spelling of 2521860 in words is "two million, five hundred twenty-one thousand, eight hundred sixty".