4818561 has 16 divisors (see below), whose sum is σ = 7062528. Its totient is φ = 2898000.

The previous prime is 4818559. The next prime is 4818577. The reversal of 4818561 is 1658184.

It is not a de Polignac number, because 4818561 - 2¹ = 4818559 is a prime.

It is a super-2 number, since 2×4818561² = 46437060221442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (4818521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4500 + ... + 5466.

It is an arithmetic number, because the mean of its divisors is an integer number (441408).

Almost surely, 2^4818561 is an apocalyptic number.

It is an amenable number.

4818561 is a deficient number, since it is larger than the sum of its proper divisors (2243967).

4818561 is a wasteful number, since it uses less digits than its factorization.

4818561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its digits is 7680, while the sum is 33.

The square root of 4818561 is about 2195.1220922764. The cubic root of 4818561 is about 168.9036833153.

The spelling of 4818561 in words is "four million, eight hundred eighteen thousand, five hundred sixty-one".