7534561 has 4 divisors (see below), whose sum is σ = 7556500. Its totient is φ = 7512624.

The previous prime is 7534511. The next prime is 7534601. The reversal of 7534561 is 1654357.

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 4579600 + 2954961 = 2140^2 + 1719^2 .

It is a cyclic number.

It is not a de Polignac number, because 7534561 - 2⁷ = 7534433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7534511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10446 + ... + 11143.

It is an arithmetic number, because the mean of its divisors is an integer number (1889125).

Almost surely, 2^7534561 is an apocalyptic number.

It is an amenable number.

7534561 is a deficient number, since it is larger than the sum of its proper divisors (21939).

7534561 is a wasteful number, since it uses less digits than its factorization.

7534561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21938.

The product of its digits is 12600, while the sum is 31.

The square root of 7534561 is about 2744.9154813946. The cubic root of 7534561 is about 196.0435919284.

The spelling of 7534561 in words is "seven million, five hundred thirty-four thousand, five hundred sixty-one".