5109981 has 8 divisors (see below), whose sum is σ = 6958464. Its totient is φ = 3334080.

The previous prime is 5109971. The next prime is 5109989. The reversal of 5109981 is 1899015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5109981 - 2¹¹ = 5107933 is a prime.

It is a super-2 number, since 2×5109981² = 52223811640722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5109989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17980 + ... + 18261.

It is an arithmetic number, because the mean of its divisors is an integer number (869808).

Almost surely, 2^5109981 is an apocalyptic number.

It is an amenable number.

5109981 is a deficient number, since it is larger than the sum of its proper divisors (1848483).

5109981 is a wasteful number, since it uses less digits than its factorization.

5109981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36291.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 5109981 is about 2260.5267085350. The cubic root of 5109981 is about 172.2422784520.

The spelling of 5109981 in words is "five million, one hundred nine thousand, nine hundred eighty-one".