51203223 has 6 divisors (see below), whose sum is σ = 73960224. Its totient is φ = 34135476.

The previous prime is 51203203. The next prime is 51203249. The reversal of 51203223 is 32230215.

51203223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51203223 - 2¹⁰ = 51202199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51203196 and 51203205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51203203) 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 5 ways as a sum of consecutive naturals, for example, 2844615 + ... + 2844632.

It is an arithmetic number, because the mean of its divisors is an integer number (12326704).

Almost surely, 2^51203223 is an apocalyptic number.

51203223 is a deficient number, since it is larger than the sum of its proper divisors (22757001).

51203223 is a wasteful number, since it uses less digits than its factorization.

51203223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689253 (or 5689250 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 51203223 is about 7155.6427384268. The cubic root of 51203223 is about 371.3348981093.

Adding to 51203223 its reverse (32230215), we get a palindrome (83433438).

The spelling of 51203223 in words is "fifty-one million, two hundred three thousand, two hundred twenty-three".