161352441 has 6 divisors (see below), whose sum is σ = 233064650. Its totient is φ = 107568288.

The previous prime is 161352437. The next prime is 161352467. The reversal of 161352441 is 144253161.

It is a happy number.

161352441 is a `hidden beast` number, since 1 + 613 + 5 + 2 + 4 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 161188416 + 164025 = 12696^2 + 405^2 .

It is not a de Polignac number, because 161352441 - 2² = 161352437 is a prime.

It is a super-2 number, since 2×161352441² = 52069220433316962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161352421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8964016 + ... + 8964033.

Almost surely, 2^161352441 is an apocalyptic number.

It is an amenable number.

161352441 is a deficient number, since it is larger than the sum of its proper divisors (71712209).

161352441 is a wasteful number, since it uses less digits than its factorization.

161352441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17928055 (or 17928052 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 161352441 is about 12702.4580692085. The cubic root of 161352441 is about 544.4088543058.

The spelling of 161352441 in words is "one hundred sixty-one million, three hundred fifty-two thousand, four hundred forty-one".