51280147 has 2 divisors, whose sum is σ = 51280148. Its totient is φ = 51280146.

The previous prime is 51280121. The next prime is 51280157. The reversal of 51280147 is 74108215.

51280147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51280147 - 2¹¹ = 51278099 is a prime.

It is not a weakly prime, because it can be changed into another prime (51280157) 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, 25640073 + 25640074.

It is an arithmetic number, because the mean of its divisors is an integer number (25640074).

Almost surely, 2^51280147 is an apocalyptic number.

51280147 is a deficient number, since it is larger than the sum of its proper divisors (1).

51280147 is an equidigital number, since it uses as much as digits as its factorization.

51280147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 51280147 is about 7161.0157799016. The cubic root of 51280147 is about 371.5207605838.

The spelling of 51280147 in words is "fifty-one million, two hundred eighty thousand, one hundred forty-seven".