52221263 has 4 divisors (see below), whose sum is σ = 55293120. Its totient is φ = 49149408.

The previous prime is 52221259. The next prime is 52221269. The reversal of 52221263 is 36212225.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52221263 - 2² = 52221259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52221269) 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, 1535903 + ... + 1535936.

It is an arithmetic number, because the mean of its divisors is an integer number (13823280).

Almost surely, 2^52221263 is an apocalyptic number.

52221263 is a deficient number, since it is larger than the sum of its proper divisors (3071857).

52221263 is a wasteful number, since it uses less digits than its factorization.

52221263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071856.

The product of its digits is 1440, while the sum is 23.

The square root of 52221263 is about 7226.4280941555. The cubic root of 52221263 is about 373.7797682505.

Adding to 52221263 its reverse (36212225), we get a palindrome (88433488).

The spelling of 52221263 in words is "fifty-two million, two hundred twenty-one thousand, two hundred sixty-three".