51203 has 2 divisors, whose sum is σ = 51204. Its totient is φ = 51202.

The previous prime is 51199. The next prime is 51217. The reversal of 51203 is 30215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51203 - 2² = 51199 is a prime.

It is a Sophie Germain prime.

It is equal to p₅₂₄₀ and since 51203 and 5240 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25601 + 25602.

It is an arithmetic number, because the mean of its divisors is an integer number (25602).

2⁵¹²⁰³ is an apocalyptic number.

51203 is a deficient number, since it is larger than the sum of its proper divisors (1).

51203 is an equidigital number, since it uses as much as digits as its factorization.

51203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 51203 is about 226.2807990087. The cubic root of 51203 is about 37.1334359030.

Adding to 51203 its reverse (30215), we get a palindrome (81418).

The spelling of 51203 in words is "fifty-one thousand, two hundred three".