52832721 has 4 divisors (see below), whose sum is σ = 70443632. Its totient is φ = 35221812.

The previous prime is 52832713. The next prime is 52832729. The reversal of 52832721 is 12723825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (52832713) and next prime (52832729).

It is not a de Polignac number, because 52832721 - 2³ = 52832713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52832729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8805451 + ... + 8805456.

It is an arithmetic number, because the mean of its divisors is an integer number (17610908).

Almost surely, 2^52832721 is an apocalyptic number.

It is an amenable number.

52832721 is a deficient number, since it is larger than the sum of its proper divisors (17610911).

52832721 is a wasteful number, since it uses less digits than its factorization.

52832721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17610910.

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

The square root of 52832721 is about 7268.6120408232. The cubic root of 52832721 is about 375.2329716790.

The spelling of 52832721 in words is "fifty-two million, eight hundred thirty-two thousand, seven hundred twenty-one".