4520561 has 4 divisors (see below), whose sum is σ = 4526400. Its totient is φ = 4514724.

The previous prime is 4520543. The next prime is 4520563. The reversal of 4520561 is 1650254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4520561 - 2⁶ = 4520497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4520563) 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, 1541 + ... + 3378.

It is an arithmetic number, because the mean of its divisors is an integer number (1131600).

Almost surely, 2^4520561 is an apocalyptic number.

It is an amenable number.

4520561 is a deficient number, since it is larger than the sum of its proper divisors (5839).

4520561 is an equidigital number, since it uses as much as digits as its factorization.

4520561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5838.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 4520561 is about 2126.1610945552. The cubic root of 4520561 is about 165.3474283242.

The spelling of 4520561 in words is "four million, five hundred twenty thousand, five hundred sixty-one".