172144263 has 4 divisors (see below), whose sum is σ = 229525688. Its totient is φ = 114762840.

The previous prime is 172144249. The next prime is 172144267. The reversal of 172144263 is 362441271.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 172144263 - 2¹⁶ = 172078727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172144263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172144267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28690708 + ... + 28690713.

It is an arithmetic number, because the mean of its divisors is an integer number (57381422).

Almost surely, 2^172144263 is an apocalyptic number.

172144263 is a deficient number, since it is larger than the sum of its proper divisors (57381425).

172144263 is an equidigital number, since it uses as much as digits as its factorization.

172144263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57381424.

The product of its digits is 8064, while the sum is 30.

The square root of 172144263 is about 13120.3758711403. The cubic root of 172144263 is about 556.2852156638.

The spelling of 172144263 in words is "one hundred seventy-two million, one hundred forty-four thousand, two hundred sixty-three".