167543161 has 4 divisors (see below), whose sum is σ = 167638912. Its totient is φ = 167447412.

The previous prime is 167543147. The next prime is 167543171. The reversal of 167543161 is 161345761.

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 not a de Polignac number, because 167543161 - 2²⁷ = 33325433 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (167543111) 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, 45201 + ... + 48766.

It is an arithmetic number, because the mean of its divisors is an integer number (41909728).

Almost surely, 2^167543161 is an apocalyptic number.

It is an amenable number.

167543161 is a deficient number, since it is larger than the sum of its proper divisors (95751).

167543161 is an equidigital number, since it uses as much as digits as its factorization.

167543161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95750.

The product of its digits is 15120, while the sum is 34.

The square root of 167543161 is about 12943.8464530448. The cubic root of 167543161 is about 551.2842287935.

The spelling of 167543161 in words is "one hundred sixty-seven million, five hundred forty-three thousand, one hundred sixty-one".