2511220540 has 24 divisors (see below), whose sum is σ = 5362948080. Its totient is φ = 987462528.

The previous prime is 2511220493. The next prime is 2511220567. The reversal of 2511220540 is 450221152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062897 + ... + 1065256.

It is an arithmetic number, because the mean of its divisors is an integer number (223456170).

Almost surely, 2^2511220540 is an apocalyptic number.

2511220540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2511220540 is an abundant number, since it is smaller than the sum of its proper divisors (2851727540).

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

2511220540 is a wasteful number, since it uses less digits than its factorization.

2511220540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128221 (or 2128219 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2511220540 is about 50112.0797812264. The cubic root of 2511220540 is about 1359.2362601982.

Adding to 2511220540 its reverse (450221152), we get a palindrome (2961441692).

The spelling of 2511220540 in words is "two billion, five hundred eleven million, two hundred twenty thousand, five hundred forty".