5165181 has 16 divisors (see below), whose sum is σ = 8745600. Its totient is φ = 2951424.

The previous prime is 5165137. The next prime is 5165191. The reversal of 5165181 is 1815615.

5165181 is a `hidden beast` number, since 5 + 1 + 651 + 8 + 1 = 666.

It is not a de Polignac number, because 5165181 - 2⁹ = 5164669 is a prime.

It is a super-2 number, since 2×5165181² = 53358189525522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165191) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13476 + ... + 13853.

It is an arithmetic number, because the mean of its divisors is an integer number (546600).

Almost surely, 2^5165181 is an apocalyptic number.

It is an amenable number.

5165181 is a deficient number, since it is larger than the sum of its proper divisors (3580419).

5165181 is a wasteful number, since it uses less digits than its factorization.

5165181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27345 (or 27339 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 5165181 is about 2272.7034562388. The cubic root of 5165181 is about 172.8602678474.

The spelling of 5165181 in words is "five million, one hundred sixty-five thousand, one hundred eighty-one".