272221145 has 16 divisors (see below), whose sum is σ = 373621248. Its totient is φ = 186521280.

The previous prime is 272221141. The next prime is 272221163. The reversal of 272221145 is 541122272.

It is not a de Polignac number, because 272221145 - 2² = 272221141 is a prime.

It is a super-2 number, since 2×272221145² = 148208703570222050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (272221141) 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, 63407 + ... + 67563.

It is an arithmetic number, because the mean of its divisors is an integer number (23351328).

Almost surely, 2^272221145 is an apocalyptic number.

It is an amenable number.

272221145 is a deficient number, since it is larger than the sum of its proper divisors (101400103).

272221145 is a wasteful number, since it uses less digits than its factorization.

272221145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040.

The product of its digits is 2240, while the sum is 26.

The square root of 272221145 is about 16499.1255828907. The cubic root of 272221145 is about 648.0979067949.

The spelling of 272221145 in words is "two hundred seventy-two million, two hundred twenty-one thousand, one hundred forty-five".