2520811020 has 96 divisors (see below), whose sum is σ = 8687121408. Its totient is φ = 531862272.

The previous prime is 2520811003. The next prime is 2520811037. The reversal of 2520811020 is 201180252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2520811003) and next prime (2520811037).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225384 + ... + 236303.

It is an arithmetic number, because the mean of its divisors is an integer number (90490848).

Almost surely, 2^2520811020 is an apocalyptic number.

2520811020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520811020 is an abundant number, since it is smaller than the sum of its proper divisors (6166310388).

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

2520811020 is a wasteful number, since it uses less digits than its factorization.

2520811020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461719 (or 461717 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2520811020 is about 50207.6788947667. The cubic root of 2520811020 is about 1360.9643931089.

Adding to 2520811020 its reverse (201180252), we get a palindrome (2721991272).

The spelling of 2520811020 in words is "two billion, five hundred twenty million, eight hundred eleven thousand, twenty".