51871903 has 2 divisors, whose sum is σ = 51871904. Its totient is φ = 51871902.

The previous prime is 51871871. The next prime is 51871907. The reversal of 51871903 is 30917815.

It is a happy number.

51871903 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 51871903 - 2⁵ = 51871871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51871907) 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, 25935951 + 25935952.

It is an arithmetic number, because the mean of its divisors is an integer number (25935952).

Almost surely, 2^51871903 is an apocalyptic number.

51871903 is a deficient number, since it is larger than the sum of its proper divisors (1).

51871903 is an equidigital number, since it uses as much as digits as its factorization.

51871903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 51871903 is about 7202.2151453563. The cubic root of 51871903 is about 372.9443742564.

The spelling of 51871903 in words is "fifty-one million, eight hundred seventy-one thousand, nine hundred three".