5181998 has 16 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 2501856.

The previous prime is 5181997. The next prime is 5182027. The reversal of 5181998 is 8991815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17540 + ... + 17832.

It is an arithmetic number, because the mean of its divisors is an integer number (502740).

Almost surely, 2^5181998 is an apocalyptic number.

5181998 is a deficient number, since it is larger than the sum of its proper divisors (2861842).

5181998 is a wasteful number, since it uses less digits than its factorization.

5181998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its digits is 25920, while the sum is 41.

The square root of 5181998 is about 2276.4002284308. The cubic root of 5181998 is about 173.0476663735.

The spelling of 5181998 in words is "five million, one hundred eighty-one thousand, nine hundred ninety-eight".