2521303500540 has 96 divisors (see below), whose sum is σ = 8154461839104. Its totient is φ = 575270671360.

The previous prime is 2521303500511. The next prime is 2521303500553. The reversal of 2521303500540 is 450053031252.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2521303500498 and 2521303500507.

It is a congruent number.

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, 112346334 + ... + 112368773.

It is an arithmetic number, because the mean of its divisors is an integer number (84942310824).

Almost surely, 2^{2521303500540} is an apocalyptic number.

2521303500540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521303500540 is an abundant number, since it is smaller than the sum of its proper divisors (5633158338564).

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

2521303500540 is a wasteful number, since it uses less digits than its factorization.

2521303500540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224715147 (or 224715145 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 2521303500540 its reverse (450053031252), we get a palindrome (2971356531792).

The spelling of 2521303500540 in words is "two trillion, five hundred twenty-one billion, three hundred three million, five hundred thousand, five hundred forty".