4550405 has 12 divisors (see below), whose sum is σ = 5765292. Its totient is φ = 3447360.

The previous prime is 4550401. The next prime is 4550411. The reversal of 4550405 is 5040554.

It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 4056196 = 703^2 + 2014^2 .

It is not a de Polignac number, because 4550405 - 2² = 4550401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4550401) 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 11 ways as a sum of consecutive naturals, for example, 545 + ... + 3065.

It is an arithmetic number, because the mean of its divisors is an integer number (480441).

Almost surely, 2^4550405 is an apocalyptic number.

It is an amenable number.

4550405 is a deficient number, since it is larger than the sum of its proper divisors (1214887).

4550405 is a wasteful number, since it uses less digits than its factorization.

4550405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 4550405 is about 2133.1678321220. The cubic root of 4550405 is about 165.7104960277.

Adding to 4550405 its reverse (5040554), we get a palindrome (9590959).

The spelling of 4550405 in words is "four million, five hundred fifty thousand, four hundred five".