45181193 has 4 divisors (see below), whose sum is σ = 45344580. Its totient is φ = 45017808.

The previous prime is 45181187. The next prime is 45181207. The reversal of 45181193 is 39118154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18421264 + 26759929 = 4292^2 + 5173^2 .

It is a cyclic number.

It is not a de Polignac number, because 45181193 - 2⁸ = 45180937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45181793) 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 3 ways as a sum of consecutive naturals, for example, 81278 + ... + 81831.

It is an arithmetic number, because the mean of its divisors is an integer number (11336145).

Almost surely, 2^45181193 is an apocalyptic number.

It is an amenable number.

45181193 is a deficient number, since it is larger than the sum of its proper divisors (163387).

45181193 is a wasteful number, since it uses less digits than its factorization.

45181193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163386.

The product of its digits is 4320, while the sum is 32.

The square root of 45181193 is about 6721.6956937963. The cubic root of 45181193 is about 356.1660868125.

The spelling of 45181193 in words is "forty-five million, one hundred eighty-one thousand, one hundred ninety-three".