52222211 has 4 divisors (see below), whose sum is σ = 52237992. Its totient is φ = 52206432.

The previous prime is 52222199. The next prime is 52222223. The reversal of 52222211 is 11222225.

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

It is an interprime number because it is at equal distance from previous prime (52222199) and next prime (52222223).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52222211 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 52222211.

It is not an unprimeable number, because it can be changed into a prime (52222231) 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, 806 + ... + 10251.

It is an arithmetic number, because the mean of its divisors is an integer number (13059498).

Almost surely, 2^52222211 is an apocalyptic number.

52222211 is a deficient number, since it is larger than the sum of its proper divisors (15781).

52222211 is a wasteful number, since it uses less digits than its factorization.

52222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15780.

The product of its digits is 160, while the sum is 17.

The square root of 52222211 is about 7226.4936864291. The cubic root of 52222211 is about 373.7820300436.

Adding to 52222211 its reverse (11222225), we get a palindrome (63444436).

The spelling of 52222211 in words is "fifty-two million, two hundred twenty-two thousand, two hundred eleven".