7272545 has 16 divisors (see below), whose sum is σ = 10188288. Its totient is φ = 4879680.

The previous prime is 7272527. The next prime is 7272557. The reversal of 7272545 is 5452727.

It is not a de Polignac number, because 7272545 - 2¹⁰ = 7271521 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (636768).

Almost surely, 2^7272545 is an apocalyptic number.

It is an amenable number.

7272545 is a deficient number, since it is larger than the sum of its proper divisors (2915743).

7272545 is a wasteful number, since it uses less digits than its factorization.

7272545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4480.

The product of its digits is 19600, while the sum is 32.

The square root of 7272545 is about 2696.7656553731. The cubic root of 7272545 is about 193.7442426316.

The spelling of 7272545 in words is "seven million, two hundred seventy-two thousand, five hundred forty-five".