52222187 has 4 divisors (see below), whose sum is σ = 52390416. Its totient is φ = 52053960.

The previous prime is 52222153. The next prime is 52222193. The reversal of 52222187 is 78122225.

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 52222187 - 2⁸ = 52221931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52222117) 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, 83648 + ... + 84269.

It is an arithmetic number, because the mean of its divisors is an integer number (13097604).

Almost surely, 2^52222187 is an apocalyptic number.

52222187 is a deficient number, since it is larger than the sum of its proper divisors (168229).

52222187 is a wasteful number, since it uses less digits than its factorization.

52222187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168228.

The product of its digits is 4480, while the sum is 29.

The square root of 52222187 is about 7226.4920258726. The cubic root of 52222187 is about 373.7819727833.

It can be divided in two parts, 5222218 and 7, that added together give a palindrome (5222225).

The spelling of 52222187 in words is "fifty-two million, two hundred twenty-two thousand, one hundred eighty-seven".