52272218 has 8 divisors (see below), whose sum is σ = 79102548. Its totient is φ = 25904704.

The previous prime is 52272197. The next prime is 52272221. The reversal of 52272218 is 81227225.

It can be written as a sum of positive squares in 2 ways, for example, as 52171729 + 100489 = 7223^2 + 317^2 .

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

It is a Curzon number.

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, 115421 + ... + 115872.

Almost surely, 2^52272218 is an apocalyptic number.

52272218 is a deficient number, since it is larger than the sum of its proper divisors (26830330).

52272218 is a wasteful number, since it uses less digits than its factorization.

52272218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231408.

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

The square root of 52272218 is about 7229.9528352542. The cubic root of 52272218 is about 373.9013008450.

The spelling of 52272218 in words is "fifty-two million, two hundred seventy-two thousand, two hundred eighteen".