51366886 has 8 divisors (see below), whose sum is σ = 77235480. Its totient is φ = 25621728.

The previous prime is 51366881. The next prime is 51366901. The reversal of 51366886 is 68866315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51366881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29811 + ... + 31486.

It is an arithmetic number, because the mean of its divisors is an integer number (9654435).

Almost surely, 2^51366886 is an apocalyptic number.

51366886 is a deficient number, since it is larger than the sum of its proper divisors (25868594).

51366886 is a wasteful number, since it uses less digits than its factorization.

51366886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61718.

The product of its digits is 207360, while the sum is 43.

The square root of 51366886 is about 7167.0695545669. The cubic root of 51366886 is about 371.7301150725.

The spelling of 51366886 in words is "fifty-one million, three hundred sixty-six thousand, eight hundred eighty-six".