45181157 has 4 divisors (see below), whose sum is σ = 51635616. Its totient is φ = 38726700.

The previous prime is 45181151. The next prime is 45181187. The reversal of 45181157 is 75118154.

45181157 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 45181157 - 2¹⁰ = 45180133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45181151) 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, 3227219 + ... + 3227232.

It is an arithmetic number, because the mean of its divisors is an integer number (12908904).

Almost surely, 2^45181157 is an apocalyptic number.

It is an amenable number.

45181157 is a deficient number, since it is larger than the sum of its proper divisors (6454459).

45181157 is an equidigital number, since it uses as much as digits as its factorization.

45181157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454458.

The product of its digits is 5600, while the sum is 32.

The square root of 45181157 is about 6721.6930159001. The cubic root of 45181157 is about 356.1659922158.

The spelling of 45181157 in words is "forty-five million, one hundred eighty-one thousand, one hundred fifty-seven".