5181138 has 16 divisors (see below), whose sum is σ = 11513760. Its totient is φ = 1727028.

The previous prime is 5181133. The next prime is 5181151. The reversal of 5181138 is 8311815.

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

It is not an unprimeable number, because it can be changed into a prime (5181133) 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, 47920 + ... + 48027.

It is an arithmetic number, because the mean of its divisors is an integer number (719610).

Almost surely, 2^5181138 is an apocalyptic number.

5181138 is an abundant number, since it is smaller than the sum of its proper divisors (6332622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5181138 is a wasteful number, since it uses less digits than its factorization.

5181138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95958 (or 95952 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 5181138 is about 2276.2113258659. The cubic root of 5181138 is about 173.0380928959.

The spelling of 5181138 in words is "five million, one hundred eighty-one thousand, one hundred thirty-eight".