51224233 has 8 divisors (see below), whose sum is σ = 51732360. Its totient is φ = 50718720.

The previous prime is 51224231. The next prime is 51224249. The reversal of 51224233 is 33242215.

It can be written as a sum of positive squares in 4 ways, for example, as 20720704 + 30503529 = 4552^2 + 5523^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51224233 - 2¹ = 51224231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51224231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79593 + ... + 80233.

It is an arithmetic number, because the mean of its divisors is an integer number (6466545).

Almost surely, 2^51224233 is an apocalyptic number.

It is an amenable number.

51224233 is a deficient number, since it is larger than the sum of its proper divisors (508127).

51224233 is a wasteful number, since it uses less digits than its factorization.

51224233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its digits is 1440, while the sum is 22.

The square root of 51224233 is about 7157.1106600359. The cubic root of 51224233 is about 371.3856805855.

Adding to 51224233 its reverse (33242215), we get a palindrome (84466448).

The spelling of 51224233 in words is "fifty-one million, two hundred twenty-four thousand, two hundred thirty-three".