52822721 has 8 divisors (see below), whose sum is σ = 60707520. Its totient is φ = 45022608.

The previous prime is 52822709. The next prime is 52822739. The reversal of 52822721 is 12722825.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52822721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52822741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19826 + ... + 22331.

It is an arithmetic number, because the mean of its divisors is an integer number (7588440).

Almost surely, 2^52822721 is an apocalyptic number.

It is an amenable number.

52822721 is a deficient number, since it is larger than the sum of its proper divisors (7884799).

52822721 is a wasteful number, since it uses less digits than its factorization.

52822721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42343.

The product of its digits is 4480, while the sum is 29.

The square root of 52822721 is about 7267.9241190315. The cubic root of 52822721 is about 375.2092959063.

The spelling of 52822721 in words is "fifty-two million, eight hundred twenty-two thousand, seven hundred twenty-one".