51507847 has 2 divisors, whose sum is σ = 51507848. Its totient is φ = 51507846.

The previous prime is 51507839. The next prime is 51507853. The reversal of 51507847 is 74870515.

51507847 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 51507847 - 2³ = 51507839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51507877) 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, 25753923 + 25753924.

It is an arithmetic number, because the mean of its divisors is an integer number (25753924).

Almost surely, 2^51507847 is an apocalyptic number.

51507847 is a deficient number, since it is larger than the sum of its proper divisors (1).

51507847 is an equidigital number, since it uses as much as digits as its factorization.

51507847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 51507847 is about 7176.8967527755. The cubic root of 51507847 is about 372.0698384121.

The spelling of 51507847 in words is "fifty-one million, five hundred seven thousand, eight hundred forty-seven".