51255899 has 2 divisors, whose sum is σ = 51255900. Its totient is φ = 51255898.

The previous prime is 51255887. The next prime is 51255907. The reversal of 51255899 is 99855215.

51255899 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 51255899 - 2⁸ = 51255643 is a prime.

It is not a weakly prime, because it can be changed into another prime (51255859) 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, 25627949 + 25627950.

It is an arithmetic number, because the mean of its divisors is an integer number (25627950).

Almost surely, 2^51255899 is an apocalyptic number.

51255899 is a deficient number, since it is larger than the sum of its proper divisors (1).

51255899 is an equidigital number, since it uses as much as digits as its factorization.

51255899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 44.

The square root of 51255899 is about 7159.3225238147. The cubic root of 51255899 is about 371.4621930469.

The spelling of 51255899 in words is "fifty-one million, two hundred fifty-five thousand, eight hundred ninety-nine".