2520100 has 72 divisors (see below), whose sum is σ = 6249600. Its totient is φ = 873600.

The previous prime is 2520079. The next prime is 2520121. The reversal of 2520100 is 10252.

It is an interprime number because it is at equal distance from previous prime (2520079) and next prime (2520121).

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 31861 + ... + 31939.

It is an arithmetic number, because the mean of its divisors is an integer number (86800).

2^2520100 is an apocalyptic number.

2520100 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 2520100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3124800).

2520100 is an abundant number, since it is smaller than the sum of its proper divisors (3729500).

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

2520100 is a wasteful number, since it uses less digits than its factorization.

2520100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 2520100 is about 1587.4822833657. The cubic root of 2520100 is about 136.0836423196.

Adding to 2520100 its reverse (10252), we get a palindrome (2530352).

The spelling of 2520100 in words is "two million, five hundred twenty thousand, one hundred".