7272155 has 16 divisors (see below), whose sum is σ = 10022400. Its totient is φ = 5009760.

The previous prime is 7272151. The next prime is 7272173. The reversal of 7272155 is 5512727.

It is not a de Polignac number, because 7272155 - 2² = 7272151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7272151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2435 + ... + 4524.

It is an arithmetic number, because the mean of its divisors is an integer number (626400).

Almost surely, 2^7272155 is an apocalyptic number.

7272155 is a deficient number, since it is larger than the sum of its proper divisors (2750245).

7272155 is a wasteful number, since it uses less digits than its factorization.

7272155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994.

The product of its digits is 4900, while the sum is 29.

The square root of 7272155 is about 2696.6933455623. The cubic root of 7272155 is about 193.7407793045.

It can be divided in two parts, 727 and 2155, that added together give a palindrome (2882).

The spelling of 7272155 in words is "seven million, two hundred seventy-two thousand, one hundred fifty-five".