157111 has 4 divisors (see below), whose sum is σ = 165400. Its totient is φ = 148824.

The previous prime is 157109. The next prime is 157127. The reversal of 157111 is 111751.

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

It is a cyclic number.

It is not a de Polignac number, because 157111 - 2¹ = 157109 is a prime.

It is a Duffinian number.

157111 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157141) 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, 4116 + ... + 4153.

It is an arithmetic number, because the mean of its divisors is an integer number (41350).

2¹⁵⁷¹¹¹ is an apocalyptic number.

157111 is a deficient number, since it is larger than the sum of its proper divisors (8289).

157111 is an equidigital number, since it uses as much as digits as its factorization.

157111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288.

The product of its digits is 35, while the sum is 16.

The square root of 157111 is about 396.3722997385. The cubic root of 157111 is about 53.9596177284.

Adding to 157111 its reverse (111751), we get a palindrome (268862).

The spelling of 157111 in words is "one hundred fifty-seven thousand, one hundred eleven".