4380561 has 16 divisors (see below), whose sum is σ = 6573120. Its totient is φ = 2918916.

The previous prime is 4380559. The next prime is 4380589. The reversal of 4380561 is 1650834.

It is not a de Polignac number, because 4380561 - 2¹ = 4380559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

4380561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4380361) 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 15 ways as a sum of consecutive naturals, for example, 1186 + ... + 3188.

It is an arithmetic number, because the mean of its divisors is an integer number (410820).

Almost surely, 2^4380561 is an apocalyptic number.

It is an amenable number.

4380561 is a deficient number, since it is larger than the sum of its proper divisors (2192559).

4380561 is an frugal number, since it uses more digits than its factorization.

4380561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4380561 is about 2092.9789774386. The cubic root of 4380561 is about 163.6225829304.

The spelling of 4380561 in words is "four million, three hundred eighty thousand, five hundred sixty-one".