172747275 has 12 divisors (see below), whose sum is σ = 285608952. Its totient is φ = 92131840.

The previous prime is 172747271. The next prime is 172747277. The reversal of 172747275 is 572747271.

172747275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172747275 - 2² = 172747271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172747271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1151574 + ... + 1151723.

It is an arithmetic number, because the mean of its divisors is an integer number (23800746).

Almost surely, 2^172747275 is an apocalyptic number.

172747275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172747275 is a deficient number, since it is larger than the sum of its proper divisors (112861677).

172747275 is a wasteful number, since it uses less digits than its factorization.

172747275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303310 (or 2303305 counting only the distinct ones).

The product of its digits is 192080, while the sum is 42.

The square root of 172747275 is about 13143.3357638006. The cubic root of 172747275 is about 556.9340043238.

The spelling of 172747275 in words is "one hundred seventy-two million, seven hundred forty-seven thousand, two hundred seventy-five".