52821372 has 24 divisors (see below), whose sum is σ = 126117376. Its totient is φ = 17197488.

The previous prime is 52821371. The next prime is 52821389. The reversal of 52821372 is 27312825.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52821371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50668 + ... + 51699.

Almost surely, 2^52821372 is an apocalyptic number.

It is an amenable number.

52821372 is an abundant number, since it is smaller than the sum of its proper divisors (73296004).

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

52821372 is a wasteful number, since it uses less digits than its factorization.

52821372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102417 (or 102415 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 52821372 is about 7267.8313133974. The cubic root of 52821372 is about 375.2061018158.

The spelling of 52821372 in words is "fifty-two million, eight hundred twenty-one thousand, three hundred seventy-two".