161152441 has 4 divisors (see below), whose sum is σ = 162084132. Its totient is φ = 160220752.

The previous prime is 161152429. The next prime is 161152451. The reversal of 161152441 is 144251161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144251161 = 41 ⋅3518321.

It can be written as a sum of positive squares in 2 ways, for example, as 121462441 + 39690000 = 11021^2 + 6300^2 .

It is a cyclic number.

It is not a de Polignac number, because 161152441 - 2⁹ = 161151929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161152451) 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, 465586 + ... + 465931.

It is an arithmetic number, because the mean of its divisors is an integer number (40521033).

Almost surely, 2^161152441 is an apocalyptic number.

It is an amenable number.

161152441 is a deficient number, since it is larger than the sum of its proper divisors (931691).

161152441 is an equidigital number, since it uses as much as digits as its factorization.

161152441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931690.

The product of its digits is 960, while the sum is 25.

The square root of 161152441 is about 12694.5831361254. The cubic root of 161152441 is about 544.1838256081.

The spelling of 161152441 in words is "one hundred sixty-one million, one hundred fifty-two thousand, four hundred forty-one".