51214224 has 40 divisors (see below), whose sum is σ = 133116480. Its totient is φ = 16966528.

The previous prime is 51214223. The next prime is 51214231. The reversal of 51214224 is 42241215.

51214224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51214224.

It is not an unprimeable number, because it can be changed into a prime (51214223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4822 + ... + 11210.

It is an arithmetic number, because the mean of its divisors is an integer number (3327912).

Almost surely, 2^51214224 is an apocalyptic number.

It is an amenable number.

51214224 is an abundant number, since it is smaller than the sum of its proper divisors (81902256).

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

51214224 is a wasteful number, since it uses less digits than its factorization.

51214224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567 (or 6561 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 51214224 is about 7156.4113911932. The cubic root of 51214224 is about 371.3614899425.

Adding to 51214224 its reverse (42241215), we get a palindrome (93455439).

The spelling of 51214224 in words is "fifty-one million, two hundred fourteen thousand, two hundred twenty-four".