5181194 has 4 divisors (see below), whose sum is σ = 7771794. Its totient is φ = 2590596.

The previous prime is 5181191. The next prime is 5181217. The reversal of 5181194 is 4911815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4911815 = 5 ⋅982363.

It can be written as a sum of positive squares in only one way, i.e., 5121169 + 60025 = 2263^2 + 245^2 .

It is not an unprimeable number, because it can be changed into a prime (5181191) 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 as a sum of consecutive naturals, namely, 1295297 + ... + 1295300.

Almost surely, 2^5181194 is an apocalyptic number.

5181194 is a deficient number, since it is larger than the sum of its proper divisors (2590600).

5181194 is a wasteful number, since it uses less digits than its factorization.

5181194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590599.

The product of its digits is 1440, while the sum is 29.

The square root of 5181194 is about 2276.2236269752. The cubic root of 5181194 is about 173.0387163173.

The spelling of 5181194 in words is "five million, one hundred eighty-one thousand, one hundred ninety-four".