7500545 has 16 divisors (see below), whose sum is σ = 9752400. Its totient is φ = 5505024.

The previous prime is 7500539. The next prime is 7500547. The reversal of 7500545 is 5450057.

7500545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 107584 + 7392961 = 328^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 7500545 - 2¹² = 7496449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7500547) 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, 16481 + ... + 16929.

It is an arithmetic number, because the mean of its divisors is an integer number (609525).

Almost surely, 2^7500545 is an apocalyptic number.

It is an amenable number.

7500545 is a deficient number, since it is larger than the sum of its proper divisors (2251855).

7500545 is a wasteful number, since it uses less digits than its factorization.

7500545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 7500545 is about 2738.7122886495. The cubic root of 7500545 is about 195.7481232833.

The spelling of 7500545 in words is "seven million, five hundred thousand, five hundred forty-five".