52213012 has 6 divisors (see below), whose sum is σ = 91372778. Its totient is φ = 26106504.

The previous prime is 52212989. The next prime is 52213039. The reversal of 52213012 is 21031225.

It can be written as a sum of positive squares in only one way, i.e., 34269316 + 17943696 = 5854^2 + 4236^2 .

It is a super-2 number, since 2×52213012² = 5452397244224288, which contains 22 as substring.

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, 6526623 + ... + 6526630.

Almost surely, 2^52213012 is an apocalyptic number.

It is an amenable number.

52213012 is a deficient number, since it is larger than the sum of its proper divisors (39159766).

52213012 is a wasteful number, since it uses less digits than its factorization.

52213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13053257 (or 13053255 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 52213012 is about 7225.8571809855. The cubic root of 52213012 is about 373.7600813826.

Adding to 52213012 its reverse (21031225), we get a palindrome (73244237).

The spelling of 52213012 in words is "fifty-two million, two hundred thirteen thousand, twelve".