51255887 has 2 divisors, whose sum is σ = 51255888. Its totient is φ = 51255886.

The previous prime is 51255877. The next prime is 51255899. The reversal of 51255887 is 78855215.

51255887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51255887 - 2²⁴ = 34478671 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 (51255817) 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, 25627943 + 25627944.

It is an arithmetic number, because the mean of its divisors is an integer number (25627944).

Almost surely, 2^51255887 is an apocalyptic number.

51255887 is a deficient number, since it is larger than the sum of its proper divisors (1).

51255887 is an equidigital number, since it uses as much as digits as its factorization.

51255887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112000, while the sum is 41.

The square root of 51255887 is about 7159.3216857465. The cubic root of 51255887 is about 371.4621640581.

The spelling of 51255887 in words is "fifty-one million, two hundred fifty-five thousand, eight hundred eighty-seven".