161775343 has 2 divisors, whose sum is σ = 161775344. Its totient is φ = 161775342.

The previous prime is 161775287. The next prime is 161775401. The reversal of 161775343 is 343577161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161775343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161775643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80887671 + 80887672.

It is an arithmetic number, because the mean of its divisors is an integer number (80887672).

Almost surely, 2^161775343 is an apocalyptic number.

161775343 is a deficient number, since it is larger than the sum of its proper divisors (1).

161775343 is an equidigital number, since it uses as much as digits as its factorization.

161775343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 161775343 is about 12719.0936390924. The cubic root of 161775343 is about 544.8840681501.

The spelling of 161775343 in words is "one hundred sixty-one million, seven hundred seventy-five thousand, three hundred forty-three".