7275445 has 4 divisors (see below), whose sum is σ = 8730540. Its totient is φ = 5820352.

The previous prime is 7275431. The next prime is 7275451. The reversal of 7275445 is 5445727.

7275445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4835601 + 2439844 = 2199^2 + 1562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7275445 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7275445.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 727540 + ... + 727549.

It is an arithmetic number, because the mean of its divisors is an integer number (2182635).

Almost surely, 2^7275445 is an apocalyptic number.

It is an amenable number.

7275445 is a deficient number, since it is larger than the sum of its proper divisors (1455095).

7275445 is a wasteful number, since it uses less digits than its factorization.

7275445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455094.

The product of its digits is 39200, while the sum is 34.

The square root of 7275445 is about 2697.3032829105. The cubic root of 7275445 is about 193.7699916936.

The spelling of 7275445 in words is "seven million, two hundred seventy-five thousand, four hundred forty-five".