45157181 has 4 divisors (see below), whose sum is σ = 46207392. Its totient is φ = 44106972.

The previous prime is 45157169. The next prime is 45157199. The reversal of 45157181 is 18175154.

45157181 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 a de Polignac number, because none of the positive numbers 2^k-45157181 is a prime.

It is a super-2 number, since 2×45157181² = 4078341991733522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45157081) 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, 525041 + ... + 525126.

It is an arithmetic number, because the mean of its divisors is an integer number (11551848).

Almost surely, 2^45157181 is an apocalyptic number.

It is an amenable number.

45157181 is a deficient number, since it is larger than the sum of its proper divisors (1050211).

45157181 is a wasteful number, since it uses less digits than its factorization.

45157181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050210.

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

The square root of 45157181 is about 6719.9092999831. The cubic root of 45157181 is about 356.1029796137.

The spelling of 45157181 in words is "forty-five million, one hundred fifty-seven thousand, one hundred eighty-one".