2721275520 has 64 divisors (see below), whose sum is σ = 8674071840. Its totient is φ = 725672960.

The previous prime is 2721275509. The next prime is 2721275537. The reversal of 2721275520 is 255721272.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706746 + ... + 710585.

Almost surely, 2^2721275520 is an apocalyptic number.

2721275520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2721275520 is an abundant number, since it is smaller than the sum of its proper divisors (5952796320).

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

2721275520 is a wasteful number, since it uses less digits than its factorization.

2721275520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417353 (or 1417341 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 2721275520 is about 52165.8462981288. The cubic root of 2721275520 is about 1396.1245746144.

Adding to 2721275520 its reverse (255721272), we get a palindrome (2976996792).

The spelling of 2721275520 in words is "two billion, seven hundred twenty-one million, two hundred seventy-five thousand, five hundred twenty".