45384181 has 4 divisors (see below), whose sum is σ = 45474912. Its totient is φ = 45293452.

The previous prime is 45384167. The next prime is 45384191. The reversal of 45384181 is 18148354.

45384181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45384181 - 2¹³ = 45375989 is a prime.

It is a super-2 number, since 2×45384181² = 4119447770081522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45384161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44611 + ... + 45616.

It is an arithmetic number, because the mean of its divisors is an integer number (11368728).

Almost surely, 2^45384181 is an apocalyptic number.

It is an amenable number.

45384181 is a deficient number, since it is larger than the sum of its proper divisors (90731).

45384181 is an equidigital number, since it uses as much as digits as its factorization.

45384181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90730.

The product of its digits is 15360, while the sum is 34.

The square root of 45384181 is about 6736.7782359226. The cubic root of 45384181 is about 356.6986789135.

The spelling of 45384181 in words is "forty-five million, three hundred eighty-four thousand, one hundred eighty-one".