51611166 has 12 divisors (see below), whose sum is σ = 111824232. Its totient is φ = 17203716.

The previous prime is 51611159. The next prime is 51611171. The reversal of 51611166 is 66111615.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1433626 + ... + 1433661.

It is an arithmetic number, because the mean of its divisors is an integer number (9318686).

Almost surely, 2^51611166 is an apocalyptic number.

51611166 is an abundant number, since it is smaller than the sum of its proper divisors (60213066).

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

51611166 is a wasteful number, since it uses less digits than its factorization.

51611166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867295 (or 2867292 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 51611166 is about 7184.0911742544. The cubic root of 51611166 is about 372.3184491326.

The spelling of 51611166 in words is "fifty-one million, six hundred eleven thousand, one hundred sixty-six".