4481561 has 4 divisors (see below), whose sum is σ = 5121792. Its totient is φ = 3841332.

The previous prime is 4481537. The next prime is 4481567. The reversal of 4481561 is 1651844.

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 4481561 - 2¹⁴ = 4465177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4481567) 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, 320105 + ... + 320118.

It is an arithmetic number, because the mean of its divisors is an integer number (1280448).

Almost surely, 2^4481561 is an apocalyptic number.

It is an amenable number.

4481561 is a deficient number, since it is larger than the sum of its proper divisors (640231).

4481561 is an equidigital number, since it uses as much as digits as its factorization.

4481561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640230.

The product of its digits is 3840, while the sum is 29.

The square root of 4481561 is about 2116.9697683245. The cubic root of 4481561 is about 164.8705565736.

The spelling of 4481561 in words is "four million, four hundred eighty-one thousand, five hundred sixty-one".