272057209 has 4 divisors (see below), whose sum is σ = 280833280. Its totient is φ = 263281140.

The previous prime is 272057183. The next prime is 272057251. The reversal of 272057209 is 902750272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-272057209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272057809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4387989 + ... + 4388050.

It is an arithmetic number, because the mean of its divisors is an integer number (70208320).

Almost surely, 2^272057209 is an apocalyptic number.

It is an amenable number.

272057209 is a deficient number, since it is larger than the sum of its proper divisors (8776071).

272057209 is an equidigital number, since it uses as much as digits as its factorization.

272057209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776070.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 272057209 is about 16494.1568138538. The cubic root of 272057209 is about 647.9677823044.

The spelling of 272057209 in words is "two hundred seventy-two million, fifty-seven thousand, two hundred nine".