161241523 has 8 divisors (see below), whose sum is σ = 172800288. Its totient is φ = 150061824.

The previous prime is 161241517. The next prime is 161241593. The reversal of 161241523 is 325142161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161241523 - 2¹⁷ = 161110451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161241503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93886 + ... + 95587.

It is an arithmetic number, because the mean of its divisors is an integer number (21600036).

Almost surely, 2^161241523 is an apocalyptic number.

161241523 is a deficient number, since it is larger than the sum of its proper divisors (11558765).

161241523 is a wasteful number, since it uses less digits than its factorization.

161241523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189533.

The product of its digits is 1440, while the sum is 25.

The square root of 161241523 is about 12698.0913132644. The cubic root of 161241523 is about 544.2840786224.

Adding to 161241523 its reverse (325142161), we get a palindrome (486383684).

The spelling of 161241523 in words is "one hundred sixty-one million, two hundred forty-one thousand, five hundred twenty-three".