4508561 has 4 divisors (see below), whose sum is σ = 4630452. Its totient is φ = 4386672.

The previous prime is 4508549. The next prime is 4508597. The reversal of 4508561 is 1658054.

It is a happy number.

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 4177936 + 330625 = 2044^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 4508561 - 2¹⁰ = 4507537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4508501) 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, 60890 + ... + 60963.

It is an arithmetic number, because the mean of its divisors is an integer number (1157613).

Almost surely, 2^4508561 is an apocalyptic number.

It is an amenable number.

4508561 is a deficient number, since it is larger than the sum of its proper divisors (121891).

4508561 is a wasteful number, since it uses less digits than its factorization.

4508561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121890.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 4508561 is about 2123.3372318122. The cubic root of 4508561 is about 165.2009916748.

The spelling of 4508561 in words is "four million, five hundred eight thousand, five hundred sixty-one".