7540565 has 4 divisors (see below), whose sum is σ = 9048684. Its totient is φ = 6032448.

The previous prime is 7540541. The next prime is 7540567. The reversal of 7540565 is 5650457.

It is a happy number.

7540565 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 2696164 + 4844401 = 1642^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 7540565 - 2⁶ = 7540501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7540567) by changing a digit.

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, 754052 + ... + 754061.

It is an arithmetic number, because the mean of its divisors is an integer number (2262171).

Almost surely, 2^7540565 is an apocalyptic number.

It is an amenable number.

7540565 is a deficient number, since it is larger than the sum of its proper divisors (1508119).

7540565 is a wasteful number, since it uses less digits than its factorization.

7540565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508118.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 7540565 is about 2746.0089220540. The cubic root of 7540565 is about 196.0956512860.

The spelling of 7540565 in words is "seven million, five hundred forty thousand, five hundred sixty-five".