161324151 has 4 divisors (see below), whose sum is σ = 215098872. Its totient is φ = 107549432.

The previous prime is 161324147. The next prime is 161324167. The reversal of 161324151 is 151423161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151423161 = 3 ⋅50474387.

It is a cyclic number.

It is not a de Polignac number, because 161324151 - 2² = 161324147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161324131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26887356 + ... + 26887361.

It is an arithmetic number, because the mean of its divisors is an integer number (53774718).

Almost surely, 2^161324151 is an apocalyptic number.

161324151 is a deficient number, since it is larger than the sum of its proper divisors (53774721).

161324151 is an equidigital number, since it uses as much as digits as its factorization.

161324151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53774720.

The product of its digits is 720, while the sum is 24.

The square root of 161324151 is about 12701.3444563952. The cubic root of 161324151 is about 544.3770352919.

The spelling of 161324151 in words is "one hundred sixty-one million, three hundred twenty-four thousand, one hundred fifty-one".