51338233 has 2 divisors, whose sum is σ = 51338234. Its totient is φ = 51338232.

The previous prime is 51338227. The next prime is 51338251. The reversal of 51338233 is 33283315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43204329 + 8133904 = 6573^2 + 2852^2 .

It is a cyclic number.

It is not a de Polignac number, because 51338233 - 2¹⁷ = 51207161 is a prime.

It is a super-2 number, since 2×51338233² = 5271228335124578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51338213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25669116 + 25669117.

It is an arithmetic number, because the mean of its divisors is an integer number (25669117).

Almost surely, 2^51338233 is an apocalyptic number.

It is an amenable number.

51338233 is a deficient number, since it is larger than the sum of its proper divisors (1).

51338233 is an equidigital number, since it uses as much as digits as its factorization.

51338233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 51338233 is about 7165.0703415947. The cubic root of 51338233 is about 371.6609838684.

It can be divided in two parts, 5133 and 8233, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 51338233 in words is "fifty-one million, three hundred thirty-eight thousand, two hundred thirty-three".