52221291 has 16 divisors (see below), whose sum is σ = 74227200. Its totient is φ = 32561568.

The previous prime is 52221289. The next prime is 52221317. The reversal of 52221291 is 19212225.

It is not a de Polignac number, because 52221291 - 2¹ = 52221289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52221241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296 + ... + 10301.

It is an arithmetic number, because the mean of its divisors is an integer number (4639200).

Almost surely, 2^52221291 is an apocalyptic number.

52221291 is a deficient number, since it is larger than the sum of its proper divisors (22005909).

52221291 is a wasteful number, since it uses less digits than its factorization.

52221291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11698.

The product of its digits is 720, while the sum is 24.

The square root of 52221291 is about 7226.4300314886. The cubic root of 52221291 is about 373.7798350549.

The spelling of 52221291 in words is "fifty-two million, two hundred twenty-one thousand, two hundred ninety-one".