52218243 has 32 divisors (see below), whose sum is σ = 96453120. Its totient is φ = 27125280.

The previous prime is 52218239. The next prime is 52218253. The reversal of 52218243 is 34281225.

It is not a de Polignac number, because 52218243 - 2² = 52218239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (52218223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10480 + ... + 14637.

It is an arithmetic number, because the mean of its divisors is an integer number (3014160).

Almost surely, 2^52218243 is an apocalyptic number.

52218243 is a deficient number, since it is larger than the sum of its proper divisors (44234877).

52218243 is a wasteful number, since it uses less digits than its factorization.

52218243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25144 (or 25138 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 52218243 is about 7226.2191358967. The cubic root of 52218243 is about 373.7725627777.

Adding to 52218243 its reverse (34281225), we get a palindrome (86499468).

It can be divided in two parts, 522182 and 43, that added together give a palindrome (522225).

The spelling of 52218243 in words is "fifty-two million, two hundred eighteen thousand, two hundred forty-three".