52212231 has 12 divisors (see below), whose sum is σ = 78697008. Its totient is φ = 33294624.

The previous prime is 52212221. The next prime is 52212233. The reversal of 52212231 is 13221225.

It is not a de Polignac number, because 52212231 - 2²² = 48017927 is a prime.

It is a super-2 number, since 2×52212231² = 5452234131994722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52212233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125910 + ... + 126323.

It is an arithmetic number, because the mean of its divisors is an integer number (6558084).

Almost surely, 2^52212231 is an apocalyptic number.

52212231 is a deficient number, since it is larger than the sum of its proper divisors (26484777).

52212231 is a wasteful number, since it uses less digits than its factorization.

52212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252262 (or 252259 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 52212231 is about 7225.8031387521. The cubic root of 52212231 is about 373.7582178109.

Adding to 52212231 its reverse (13221225), we get a palindrome (65433456).

The spelling of 52212231 in words is "fifty-two million, two hundred twelve thousand, two hundred thirty-one".