45157 has 4 divisors (see below), whose sum is σ = 51616. Its totient is φ = 38700.

The previous prime is 45139. The next prime is 45161. The reversal of 45157 is 75154.

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-45157 is a prime.

It is the 213-rd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45127) by changing a digit.

It is a nontrivial repunit in base 212.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3219 + ... + 3232.

It is an arithmetic number, because the mean of its divisors is an integer number (12904).

2⁴⁵¹⁵⁷ is an apocalyptic number.

It is an amenable number.

45157 is a deficient number, since it is larger than the sum of its proper divisors (6459).

45157 is an equidigital number, since it uses as much as digits as its factorization.

45157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458.

The product of its digits is 700, while the sum is 22.

The square root of 45157 is about 212.5017646986. The cubic root of 45157 is about 35.6102503833.

It can be divided in two parts, 45 and 157, that added together give a palindrome (202).

The spelling of 45157 in words is "forty-five thousand, one hundred fifty-seven".