2520900 has 54 divisors (see below), whose sum is σ = 7904442. Its totient is φ = 672000.

The previous prime is 2520887. The next prime is 2520907. The reversal of 2520900 is 90252.

2520900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 161604 + 2359296 = 402^2 + 1536^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2520907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 501 + ... + 2300.

2^2520900 is an apocalyptic number.

2520900 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 2520900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3952221).

2520900 is an abundant number, since it is smaller than the sum of its proper divisors (5383542).

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

2520900 is a wasteful number, since it uses less digits than its factorization.

2520900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2811 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2520900 is about 1587.7342346879. The cubic root of 2520900 is about 136.0980406102.

The spelling of 2520900 in words is "two million, five hundred twenty thousand, nine hundred".