52721512 has 8 divisors (see below), whose sum is σ = 98852850. Its totient is φ = 26360752.

The previous prime is 52721491. The next prime is 52721521. The reversal of 52721512 is 21512725.

52721512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40373316 + 12348196 = 6354^2 + 3514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×52721512² = 5559115655132288, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 3295087 + ... + 3295102.

Almost surely, 2^52721512 is an apocalyptic number.

It is an amenable number.

52721512 is a deficient number, since it is larger than the sum of its proper divisors (46131338).

52721512 is a wasteful number, since it uses less digits than its factorization.

52721512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590195 (or 6590191 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 52721512 is about 7260.9580635065. The cubic root of 52721512 is about 374.9695074465.

The spelling of 52721512 in words is "fifty-two million, seven hundred twenty-one thousand, five hundred twelve".