51803113 has 2 divisors, whose sum is σ = 51803114. Its totient is φ = 51803112.

The previous prime is 51803099. The next prime is 51803119. The reversal of 51803113 is 31130815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46949904 + 4853209 = 6852^2 + 2203^2 .

It is a cyclic number.

It is not a de Polignac number, because 51803113 - 2¹⁷ = 51672041 is a prime.

It is not a weakly prime, because it can be changed into another prime (51803119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25901556 + 25901557.

It is an arithmetic number, because the mean of its divisors is an integer number (25901557).

Almost surely, 2^51803113 is an apocalyptic number.

It is an amenable number.

51803113 is a deficient number, since it is larger than the sum of its proper divisors (1).

51803113 is an equidigital number, since it uses as much as digits as its factorization.

51803113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 51803113 is about 7197.4379469364. The cubic root of 51803113 is about 372.7794410837.

Adding to 51803113 its reverse (31130815), we get a palindrome (82933928).

The spelling of 51803113 in words is "fifty-one million, eight hundred three thousand, one hundred thirteen".