172712265 has 64 divisors (see below), whose sum is σ = 324311040. Its totient is φ = 77552640.

The previous prime is 172712237. The next prime is 172712273. The reversal of 172712265 is 562217271.

It is not a de Polignac number, because 172712265 - 2¹⁰ = 172711241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 187476 + ... + 188394.

It is an arithmetic number, because the mean of its divisors is an integer number (5067360).

Almost surely, 2^172712265 is an apocalyptic number.

172712265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172712265 is a deficient number, since it is larger than the sum of its proper divisors (151598775).

172712265 is a wasteful number, since it uses less digits than its factorization.

172712265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its digits is 11760, while the sum is 33.

The square root of 172712265 is about 13142.0038426413. The cubic root of 172712265 is about 556.8963779187.

The spelling of 172712265 in words is "one hundred seventy-two million, seven hundred twelve thousand, two hundred sixty-five".