2520906540 has 72 divisors (see below), whose sum is σ = 7498222032. Its totient is φ = 632693760.

The previous prime is 2520906539. The next prime is 2520906569. The reversal of 2520906540 is 456090252.

2520906540 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 55351 + ... + 90030.

Almost surely, 2^2520906540 is an apocalyptic number.

2520906540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520906540 is an abundant number, since it is smaller than the sum of its proper divisors (4977315492).

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

2520906540 is a wasteful number, since it uses less digits than its factorization.

2520906540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145427 (or 145408 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2520906540 is about 50208.6301346691. The cubic root of 2520906540 is about 1360.9815830365.

Adding to 2520906540 its reverse (456090252), we get a palindrome (2976996792).

The spelling of 2520906540 in words is "two billion, five hundred twenty million, nine hundred six thousand, five hundred forty".