172268775 has 72 divisors (see below), whose sum is σ = 365782144. Its totient is φ = 78732000.

The previous prime is 172268773. The next prime is 172268777. The reversal of 172268775 is 577862271.

172268775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (172268773) and next prime (172268777).

It is not a de Polignac number, because 172268775 - 2¹ = 172268773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 172268775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172268773) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40500 + ... + 44550.

Almost surely, 2^172268775 is an apocalyptic number.

172268775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172268775 is an abundant number, since it is smaller than the sum of its proper divisors (193513369).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172268775 is an equidigital number, since it uses as much as digits as its factorization.

172268775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083 (or 4066 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 172268775 is about 13125.1199994514. The cubic root of 172268775 is about 556.4193037647.

The spelling of 172268775 in words is "one hundred seventy-two million, two hundred sixty-eight thousand, seven hundred seventy-five".