4555555 has 4 divisors (see below), whose sum is σ = 5466672. Its totient is φ = 3644440.

The previous prime is 4555547. The next prime is 4555559. The reversal of 4555555 is 5555554.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4555555 - 2³ = 4555547 is a prime.

It is a Duffinian number.

4555555 is a modest number, since divided by 5555 gives 455 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 4555555.

It is not an unprimeable number, because it can be changed into a prime (4555559) 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, 455551 + ... + 455560.

It is an arithmetic number, because the mean of its divisors is an integer number (1366668).

Almost surely, 2^4555555 is an apocalyptic number.

4555555 is a deficient number, since it is larger than the sum of its proper divisors (911117).

4555555 is an equidigital number, since it uses as much as digits as its factorization.

4555555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911116.

The product of its digits is 62500, while the sum is 34.

The square root of 4555555 is about 2134.3746156661. The cubic root of 4555555 is about 165.7729877035.

Subtracting 4555555 from its reverse (5555554), we obtain a palindrome (999999).

The spelling of 4555555 in words is "four million, five hundred fifty-five thousand, five hundred fifty-five".