144520161 has 4 divisors (see below), whose sum is σ = 192693552. Its totient is φ = 96346772.

The previous prime is 144520153. The next prime is 144520177. The reversal of 144520161 is 161025441.

It is a happy number.

144520161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161025441 = 3 ⋅53675147.

It is a cyclic number.

It is not a de Polignac number, because 144520161 - 2³ = 144520153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144520361) 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, 24086691 + ... + 24086696.

It is an arithmetic number, because the mean of its divisors is an integer number (48173388).

Almost surely, 2^144520161 is an apocalyptic number.

It is an amenable number.

144520161 is a deficient number, since it is larger than the sum of its proper divisors (48173391).

144520161 is an equidigital number, since it uses as much as digits as its factorization.

144520161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48173390.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 144520161 is about 12021.6538379709. The cubic root of 144520161 is about 524.7786350198.

The spelling of 144520161 in words is "one hundred forty-four million, five hundred twenty thousand, one hundred sixty-one".