52221065 has 16 divisors (see below), whose sum is σ = 67652928. Its totient is φ = 38467776.

The previous prime is 52221053. The next prime is 52221079. The reversal of 52221065 is 56012225.

It is a cyclic number.

It is not a de Polignac number, because 52221065 - 2⁸ = 52220809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52221065.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35882 + ... + 37308.

It is an arithmetic number, because the mean of its divisors is an integer number (4228308).

Almost surely, 2^52221065 is an apocalyptic number.

It is an amenable number.

52221065 is a deficient number, since it is larger than the sum of its proper divisors (15431863).

52221065 is a wasteful number, since it uses less digits than its factorization.

52221065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 52221065 is about 7226.4143944283. The cubic root of 52221065 is about 373.7792958472.

The spelling of 52221065 in words is "fifty-two million, two hundred twenty-one thousand, sixty-five".