51889855 has 16 divisors (see below), whose sum is σ = 66193920. Its totient is φ = 38937888.

The previous prime is 51889841. The next prime is 51889867. The reversal of 51889855 is 55898815.

It is a cyclic number.

It is not a de Polignac number, because 51889855 - 2⁷ = 51889727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51889799 and 51889808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7134 + ... + 12436.

It is an arithmetic number, because the mean of its divisors is an integer number (4137120).

Almost surely, 2^51889855 is an apocalyptic number.

51889855 is a deficient number, since it is larger than the sum of its proper divisors (14304065).

51889855 is a wasteful number, since it uses less digits than its factorization.

51889855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430.

The product of its digits is 576000, while the sum is 49.

The square root of 51889855 is about 7203.4613207818. The cubic root of 51889855 is about 372.9873925689.

The spelling of 51889855 in words is "fifty-one million, eight hundred eighty-nine thousand, eight hundred fifty-five".