4427561 has 4 divisors (see below), whose sum is σ = 4493712. Its totient is φ = 4361412.

The previous prime is 4427543. The next prime is 4427587. The reversal of 4427561 is 1657244.

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 a de Polignac number, because none of the positive numbers 2^k-4427561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4427261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32975 + ... + 33108.

It is an arithmetic number, because the mean of its divisors is an integer number (1123428).

Almost surely, 2^4427561 is an apocalyptic number.

It is an amenable number.

4427561 is a deficient number, since it is larger than the sum of its proper divisors (66151).

4427561 is an equidigital number, since it uses as much as digits as its factorization.

4427561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66150.

The product of its digits is 6720, while the sum is 29.

The square root of 4427561 is about 2104.1770362781. The cubic root of 4427561 is about 164.2056833349.

The spelling of 4427561 in words is "four million, four hundred twenty-seven thousand, five hundred sixty-one".