5167981 has 32 divisors (see below), whose sum is σ = 6944000. Its totient is φ = 3810240.

The previous prime is 5167973. The next prime is 5167991. The reversal of 5167981 is 1897615.

It is not a de Polignac number, because 5167981 - 2³ = 5167973 is a prime.

It is a super-2 number, since 2×5167981² = 53416055232722, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 5167981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5167991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84691 + ... + 84751.

It is an arithmetic number, because the mean of its divisors is an integer number (217000).

Almost surely, 2^5167981 is an apocalyptic number.

It is an amenable number.

5167981 is a deficient number, since it is larger than the sum of its proper divisors (1776019).

5167981 is a wasteful number, since it uses less digits than its factorization.

5167981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 100 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 5167981 is about 2273.3193792338. The cubic root of 5167981 is about 172.8914975576.

The spelling of 5167981 in words is "five million, one hundred sixty-seven thousand, nine hundred eighty-one".