161363375 has 8 divisors (see below), whose sum is σ = 201381648. Its totient is φ = 129090600.

The previous prime is 161363347. The next prime is 161363431. The reversal of 161363375 is 573363161.

It is not a de Polignac number, because 161363375 - 2²⁴ = 144586159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 645329 + ... + 645578.

It is an arithmetic number, because the mean of its divisors is an integer number (25172706).

Almost surely, 2^161363375 is an apocalyptic number.

161363375 is a deficient number, since it is larger than the sum of its proper divisors (40018273).

161363375 is an equidigital number, since it uses as much as digits as its factorization.

161363375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290922 (or 1290912 counting only the distinct ones).

The product of its digits is 34020, while the sum is 35.

The square root of 161363375 is about 12702.8884510571. Note that the first 3 decimals coincide. The cubic root of 161363375 is about 544.4211512625.

The spelling of 161363375 in words is "one hundred sixty-one million, three hundred sixty-three thousand, three hundred seventy-five".