51089807 has 2 divisors, whose sum is σ = 51089808. Its totient is φ = 51089806.

The previous prime is 51089789. The next prime is 51089833. The reversal of 51089807 is 70898015.

51089807 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 is a cyclic number.

It is not a de Polignac number, because 51089807 - 2⁸ = 51089551 is a prime.

It is a super-2 number, since 2×51089807² = 5220336758594498, 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 (51089887) 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, 25544903 + 25544904.

It is an arithmetic number, because the mean of its divisors is an integer number (25544904).

Almost surely, 2^51089807 is an apocalyptic number.

51089807 is a deficient number, since it is larger than the sum of its proper divisors (1).

51089807 is an equidigital number, since it uses as much as digits as its factorization.

51089807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 51089807 is about 7147.7134105950. The cubic root of 51089807 is about 371.0605244141.

The spelling of 51089807 in words is "fifty-one million, eighty-nine thousand, eight hundred seven".