51133224 has 64 divisors (see below), whose sum is σ = 131040000. Its totient is φ = 16623360.

The previous prime is 51133213. The next prime is 51133241. The reversal of 51133224 is 42233115.

It is a super-2 number, since 2×51133224² = 5229213193268352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51133224.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282414 + ... + 282594.

It is an arithmetic number, because the mean of its divisors is an integer number (2047500).

Almost surely, 2^51133224 is an apocalyptic number.

It is an amenable number.

51133224 is an abundant number, since it is smaller than the sum of its proper divisors (79906776).

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

51133224 is a wasteful number, since it uses less digits than its factorization.

51133224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 414 counting only the distinct ones).

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

The square root of 51133224 is about 7150.7498907457. The cubic root of 51133224 is about 371.1656058662.

Adding to 51133224 its reverse (42233115), we get a palindrome (93366339).

The spelling of 51133224 in words is "fifty-one million, one hundred thirty-three thousand, two hundred twenty-four".