51003223 has 2 divisors, whose sum is σ = 51003224. Its totient is φ = 51003222.

The previous prime is 51003217. The next prime is 51003233. The reversal of 51003223 is 32230015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51003223 - 2⁵ = 51003191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51003197 and 51003206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51003233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25501611 + 25501612.

It is an arithmetic number, because the mean of its divisors is an integer number (25501612).

Almost surely, 2^51003223 is an apocalyptic number.

51003223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51003223 is an equidigital number, since it uses as much as digits as its factorization.

51003223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 51003223 is about 7141.6540801134. The cubic root of 51003223 is about 370.8507887027.

Adding to 51003223 its reverse (32230015), we get a palindrome (83233238).

The spelling of 51003223 in words is "fifty-one million, three thousand, two hundred twenty-three".