52212442 has 4 divisors (see below), whose sum is σ = 78318666. Its totient is φ = 26106220.

The previous prime is 52212427. The next prime is 52212487. The reversal of 52212442 is 24421225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44209201 + 8003241 = 6649^2 + 2829^2 .

It is a super-2 number, since 2×52212442² = 5452278199206728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13053109 + ... + 13053112.

Almost surely, 2^52212442 is an apocalyptic number.

52212442 is a deficient number, since it is larger than the sum of its proper divisors (26106224).

52212442 is a wasteful number, since it uses less digits than its factorization.

52212442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26106223.

The product of its digits is 1280, while the sum is 22.

The square root of 52212442 is about 7225.8177391905. The cubic root of 52212442 is about 373.7587212873.

Adding to 52212442 its reverse (24421225), we get a palindrome (76633667).

The spelling of 52212442 in words is "fifty-two million, two hundred twelve thousand, four hundred forty-two".