52571218 has 12 divisors (see below), whose sum is σ = 91731582. Its totient is φ = 22530480.

The previous prime is 52571213. The next prime is 52571219. The reversal of 52571218 is 81217525.

It can be written as a sum of positive squares in only one way, i.e., 33674809 + 18896409 = 5803^2 + 4347^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52571218.

It is not an unprimeable number, because it can be changed into a prime (52571213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268123 + ... + 268318.

Almost surely, 2^52571218 is an apocalyptic number.

52571218 is a deficient number, since it is larger than the sum of its proper divisors (39160364).

52571218 is a wasteful number, since it uses less digits than its factorization.

52571218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536457 (or 536450 counting only the distinct ones).

The product of its digits is 5600, while the sum is 31.

The square root of 52571218 is about 7250.6012164510. The cubic root of 52571218 is about 374.6128579418.

The spelling of 52571218 in words is "fifty-two million, five hundred seventy-one thousand, two hundred eighteen".