51015047 has 2 divisors, whose sum is σ = 51015048. Its totient is φ = 51015046.

The previous prime is 51015023. The next prime is 51015061. The reversal of 51015047 is 74051015.

51015047 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 51015047 - 2¹² = 51010951 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51015007) 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, 25507523 + 25507524.

It is an arithmetic number, because the mean of its divisors is an integer number (25507524).

Almost surely, 2^51015047 is an apocalyptic number.

51015047 is a deficient number, since it is larger than the sum of its proper divisors (1).

51015047 is an equidigital number, since it uses as much as digits as its factorization.

51015047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51015047 is about 7142.4818515695. The cubic root of 51015047 is about 370.8794444141.

The spelling of 51015047 in words is "fifty-one million, fifteen thousand, forty-seven".