51055643 has 2 divisors, whose sum is σ = 51055644. Its totient is φ = 51055642.

The previous prime is 51055553. The next prime is 51055657. The reversal of 51055643 is 34655015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51055643 - 2⁸ = 51055387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51055243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25527821 + 25527822.

It is an arithmetic number, because the mean of its divisors is an integer number (25527822).

Almost surely, 2^51055643 is an apocalyptic number.

51055643 is a deficient number, since it is larger than the sum of its proper divisors (1).

51055643 is an equidigital number, since it uses as much as digits as its factorization.

51055643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 51055643 is about 7145.3231557432. The cubic root of 51055643 is about 370.9777959844.

The spelling of 51055643 in words is "fifty-one million, fifty-five thousand, six hundred forty-three".