51223203 has 6 divisors (see below), whose sum is σ = 73989084. Its totient is φ = 34148796.

The previous prime is 51223199. The next prime is 51223213. The reversal of 51223203 is 30232215.

51223203 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 51223203 - 2² = 51223199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51223213) 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, 2845725 + ... + 2845742.

It is an arithmetic number, because the mean of its divisors is an integer number (12331514).

Almost surely, 2^51223203 is an apocalyptic number.

51223203 is a deficient number, since it is larger than the sum of its proper divisors (22765881).

51223203 is a wasteful number, since it uses less digits than its factorization.

51223203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691473 (or 5691470 counting only the distinct ones).

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

The square root of 51223203 is about 7157.0387032627. The cubic root of 51223203 is about 371.3831913352.

Adding to 51223203 its reverse (30232215), we get a palindrome (81455418).

The spelling of 51223203 in words is "fifty-one million, two hundred twenty-three thousand, two hundred three".