52721725 has 12 divisors (see below), whose sum is σ = 74714464. Its totient is φ = 36151920.

The previous prime is 52721719. The next prime is 52721737. The reversal of 52721725 is 52712725.

52721725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52721725 - 2⁵ = 52721693 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 150459 + ... + 150808.

Almost surely, 2^52721725 is an apocalyptic number.

It is an amenable number.

52721725 is a deficient number, since it is larger than the sum of its proper divisors (21992739).

52721725 is a wasteful number, since it uses less digits than its factorization.

52721725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301284 (or 301279 counting only the distinct ones).

The product of its digits is 9800, while the sum is 31.

The square root of 52721725 is about 7260.9727309776. The cubic root of 52721725 is about 374.9700124169.

The spelling of 52721725 in words is "fifty-two million, seven hundred twenty-one thousand, seven hundred twenty-five".