51833381 has 2 divisors, whose sum is σ = 51833382. Its totient is φ = 51833380.

The previous prime is 51833377. The next prime is 51833423. The reversal of 51833381 is 18333815.

51833381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49477156 + 2356225 = 7034^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 51833381 - 2² = 51833377 is a prime.

It is a super-2 number, since 2×51833381² = 5373398771782322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51833321) 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 as a sum of consecutive naturals, namely, 25916690 + 25916691.

It is an arithmetic number, because the mean of its divisors is an integer number (25916691).

Almost surely, 2^51833381 is an apocalyptic number.

It is an amenable number.

51833381 is a deficient number, since it is larger than the sum of its proper divisors (1).

51833381 is an equidigital number, since it uses as much as digits as its factorization.

51833381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 51833381 is about 7199.5403325490. The cubic root of 51833381 is about 372.8520306162.

The spelling of 51833381 in words is "fifty-one million, eight hundred thirty-three thousand, three hundred eighty-one".