5181985 has 8 divisors (see below), whose sum is σ = 6350976. Its totient is φ = 4057200.

The previous prime is 5181983. The next prime is 5181989. The reversal of 5181985 is 5891815.

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

It is not a de Polignac number, because 5181985 - 2¹ = 5181983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5181983) 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, 10791 + ... + 11260.

It is an arithmetic number, because the mean of its divisors is an integer number (793872).

Almost surely, 2^5181985 is an apocalyptic number.

It is an amenable number.

5181985 is a deficient number, since it is larger than the sum of its proper divisors (1168991).

5181985 is a wasteful number, since it uses less digits than its factorization.

5181985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22103.

The product of its digits is 14400, while the sum is 37.

The square root of 5181985 is about 2276.3973730436. The cubic root of 5181985 is about 173.0475216661.

The spelling of 5181985 in words is "five million, one hundred eighty-one thousand, nine hundred eighty-five".