52281212 has 6 divisors (see below), whose sum is σ = 91492128. Its totient is φ = 26140604.

The previous prime is 52281199. The next prime is 52281233. The reversal of 52281212 is 21218225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6535148 + ... + 6535155.

It is an arithmetic number, because the mean of its divisors is an integer number (15248688).

Almost surely, 2^52281212 is an apocalyptic number.

It is an amenable number.

52281212 is a deficient number, since it is larger than the sum of its proper divisors (39210916).

52281212 is a wasteful number, since it uses less digits than its factorization.

52281212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13070307 (or 13070305 counting only the distinct ones).

The product of its digits is 640, while the sum is 23.

The square root of 52281212 is about 7230.5748042600. The cubic root of 52281212 is about 373.9227442017.

Adding to 52281212 its reverse (21218225), we get a palindrome (73499437).

It can be divided in two parts, 5228 and 1212, that multiplied together give a palindrome (6336336).

The spelling of 52281212 in words is "fifty-two million, two hundred eighty-one thousand, two hundred twelve".