5181966 has 12 divisors (see below), whose sum is σ = 11227632. Its totient is φ = 1727316.

The previous prime is 5181947. The next prime is 5181971. The reversal of 5181966 is 6691815.

It is a self number, because there is not a number n which added to its sum of digits gives 5181966.

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, 143926 + ... + 143961.

It is an arithmetic number, because the mean of its divisors is an integer number (935636).

Almost surely, 2^5181966 is an apocalyptic number.

5181966 is an abundant number, since it is smaller than the sum of its proper divisors (6045666).

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

5181966 is a wasteful number, since it uses less digits than its factorization.

5181966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287895 (or 287892 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 5181966 is about 2276.3931997790. The cubic root of 5181966 is about 173.0473101701.

The spelling of 5181966 in words is "five million, one hundred eighty-one thousand, nine hundred sixty-six".