157166 has 4 divisors (see below), whose sum is σ = 235752. Its totient is φ = 78582.

The previous prime is 157163. The next prime is 157177. The reversal of 157166 is 661751.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157163) 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 as a sum of consecutive naturals, namely, 39290 + ... + 39293.

It is an arithmetic number, because the mean of its divisors is an integer number (58938).

2¹⁵⁷¹⁶⁶ is an apocalyptic number.

157166 is a deficient number, since it is larger than the sum of its proper divisors (78586).

157166 is an equidigital number, since it uses as much as digits as its factorization.

157166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78585.

The product of its digits is 1260, while the sum is 26.

The square root of 157166 is about 396.4416728852. The cubic root of 157166 is about 53.9659135590.

It can be divided in two parts, 157 and 166, that multiplied together give a palindrome (26062).

The spelling of 157166 in words is "one hundred fifty-seven thousand, one hundred sixty-six".