51224133 has 8 divisors (see below), whose sum is σ = 71893600. Its totient is φ = 32352048.

The previous prime is 51224101. The next prime is 51224161. The reversal of 51224133 is 33142215.

51224133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51224133 - 2⁵ = 51224101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51204133) 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, 449278 + ... + 449391.

It is an arithmetic number, because the mean of its divisors is an integer number (8986700).

Almost surely, 2^51224133 is an apocalyptic number.

It is an amenable number.

51224133 is a deficient number, since it is larger than the sum of its proper divisors (20669467).

51224133 is a wasteful number, since it uses less digits than its factorization.

51224133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898691.

The product of its digits is 720, while the sum is 21.

The square root of 51224133 is about 7157.1036739732. The cubic root of 51224133 is about 371.3854389122.

Adding to 51224133 its reverse (33142215), we get a palindrome (84366348).

The spelling of 51224133 in words is "fifty-one million, two hundred twenty-four thousand, one hundred thirty-three".