163171157 has 4 divisors (see below), whose sum is σ = 165846156. Its totient is φ = 160496160.

The previous prime is 163171121. The next prime is 163171163. The reversal of 163171157 is 751171361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32160241 + 131010916 = 5671^2 + 11446^2 .

It is a cyclic number.

It is not a de Polignac number, because 163171157 - 2⁶ = 163171093 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 (163171187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337408 + ... + 1337529.

It is an arithmetic number, because the mean of its divisors is an integer number (41461539).

Almost surely, 2^163171157 is an apocalyptic number.

It is an amenable number.

163171157 is a deficient number, since it is larger than the sum of its proper divisors (2674999).

163171157 is an equidigital number, since it uses as much as digits as its factorization.

163171157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674998.

The product of its digits is 4410, while the sum is 32.

The square root of 163171157 is about 12773.8466015527. The cubic root of 163171157 is about 546.4466875100.

The spelling of 163171157 in words is "one hundred sixty-three million, one hundred seventy-one thousand, one hundred fifty-seven".