52166218 has 8 divisors (see below), whose sum is σ = 84268548. Its totient is φ = 24076704.

The previous prime is 52166209. The next prime is 52166221. The reversal of 52166218 is 81266125.

It can be written as a sum of positive squares in 2 ways, for example, as 40284409 + 11881809 = 6347^2 + 3447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 52166218.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003171 + ... + 1003222.

Almost surely, 2^52166218 is an apocalyptic number.

52166218 is a deficient number, since it is larger than the sum of its proper divisors (32102330).

52166218 is a wasteful number, since it uses less digits than its factorization.

52166218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006408.

The product of its digits is 5760, while the sum is 31.

The square root of 52166218 is about 7222.6185002394. The cubic root of 52166218 is about 373.6483917480.

The spelling of 52166218 in words is "fifty-two million, one hundred sixty-six thousand, two hundred eighteen".