51045847 has 2 divisors, whose sum is σ = 51045848. Its totient is φ = 51045846.

The previous prime is 51045821. The next prime is 51045889. The reversal of 51045847 is 74854015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51045847 - 2⁷ = 51045719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51045817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25522923 + 25522924.

It is an arithmetic number, because the mean of its divisors is an integer number (25522924).

Almost surely, 2^51045847 is an apocalyptic number.

51045847 is a deficient number, since it is larger than the sum of its proper divisors (1).

51045847 is an equidigital number, since it uses as much as digits as its factorization.

51045847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 51045847 is about 7144.6376395168. The cubic root of 51045847 is about 370.9540680755.

The spelling of 51045847 in words is "fifty-one million, forty-five thousand, eight hundred forty-seven".