51667855 has 8 divisors (see below), whose sum is σ = 64001664. Its totient is φ = 40000800.

The previous prime is 51667823. The next prime is 51667871. The reversal of 51667855 is 55876615.

51667855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51667855 - 2⁵ = 51667823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 166516 + ... + 166825.

It is an arithmetic number, because the mean of its divisors is an integer number (8000208).

Almost surely, 2^51667855 is an apocalyptic number.

51667855 is a deficient number, since it is larger than the sum of its proper divisors (12333809).

51667855 is a wasteful number, since it uses less digits than its factorization.

51667855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333377.

The product of its digits is 252000, while the sum is 43.

The square root of 51667855 is about 7188.0355452655. The cubic root of 51667855 is about 372.4547157539.

The spelling of 51667855 in words is "fifty-one million, six hundred sixty-seven thousand, eight hundred fifty-five".