172272615 has 16 divisors (see below), whose sum is σ = 285141600. Its totient is φ = 88710272.

The previous prime is 172272593. The next prime is 172272619. The reversal of 172272615 is 516272271.

It is a cyclic number.

It is not a de Polignac number, because 172272615 - 2¹³ = 172264423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172272619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197580 + ... + 198449.

It is an arithmetic number, because the mean of its divisors is an integer number (17821350).

Almost surely, 2^172272615 is an apocalyptic number.

172272615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172272615 is a deficient number, since it is larger than the sum of its proper divisors (112868985).

172272615 is a wasteful number, since it uses less digits than its factorization.

172272615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396066.

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

The square root of 172272615 is about 13125.2662830131. The cubic root of 172272615 is about 556.4234380683.

The spelling of 172272615 in words is "one hundred seventy-two million, two hundred seventy-two thousand, six hundred fifteen".