172163441 has 4 divisors (see below), whose sum is σ = 179648832. Its totient is φ = 164678052.

The previous prime is 172163423. The next prime is 172163447. The reversal of 172163441 is 144361271.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 172163441 - 2⁶ = 172163377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172163447) 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, 3742661 + ... + 3742706.

It is an arithmetic number, because the mean of its divisors is an integer number (44912208).

Almost surely, 2^172163441 is an apocalyptic number.

It is an amenable number.

172163441 is a deficient number, since it is larger than the sum of its proper divisors (7485391).

172163441 is an equidigital number, since it uses as much as digits as its factorization.

172163441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485390.

The product of its digits is 4032, while the sum is 29.

The square root of 172163441 is about 13121.1066987507. The cubic root of 172163441 is about 556.3058728373.

The spelling of 172163441 in words is "one hundred seventy-two million, one hundred sixty-three thousand, four hundred forty-one".