52224012 has 36 divisors (see below), whose sum is σ = 136565520. Its totient is φ = 16807392.

The previous prime is 52224001. The next prime is 52224019. The reversal of 52224012 is 21042225.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×52224012² = 5454694858752288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (52224019) 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, 23968 + ... + 26055.

Almost surely, 2^52224012 is an apocalyptic number.

It is an amenable number.

52224012 is an abundant number, since it is smaller than the sum of its proper divisors (84341508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52224012 is a wasteful number, since it uses less digits than its factorization.

52224012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50062 (or 50057 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 52224012 is about 7226.6182962711. The cubic root of 52224012 is about 373.7863268979.

Adding to 52224012 its reverse (21042225), we get a palindrome (73266237).

The spelling of 52224012 in words is "fifty-two million, two hundred twenty-four thousand, twelve".