51854166 has 48 divisors (see below), whose sum is σ = 138282144. Its totient is φ = 13675392.

The previous prime is 51854141. The next prime is 51854191. The reversal of 51854166 is 66145815.

51854166 is a `hidden beast` number, since 51 + 8 + 541 + 66 = 666.

It is an interprime number because it is at equal distance from previous prime (51854141) and next prime (51854191).

It is a self number, because there is not a number n which added to its sum of digits gives 51854166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14191 + ... + 17466.

It is an arithmetic number, because the mean of its divisors is an integer number (2880878).

Almost surely, 2^51854166 is an apocalyptic number.

51854166 is an abundant number, since it is smaller than the sum of its proper divisors (86427978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51854166 is a wasteful number, since it uses less digits than its factorization.

51854166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31685 (or 31682 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 51854166 is about 7200.9836828033. The cubic root of 51854166 is about 372.9018613988.

The spelling of 51854166 in words is "fifty-one million, eight hundred fifty-four thousand, one hundred sixty-six".