404320055 has 8 divisors (see below), whose sum is σ = 485298000. Its totient is φ = 323380096.

The previous prime is 404320043. The next prime is 404320067. The reversal of 404320055 is 550023404.

It is an interprime number because it is at equal distance from previous prime (404320043) and next prime (404320067).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404320055 - 2⁴ = 404320039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404320055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25976 + ... + 38514.

It is an arithmetic number, because the mean of its divisors is an integer number (60662250).

Almost surely, 2^404320055 is an apocalyptic number.

404320055 is a deficient number, since it is larger than the sum of its proper divisors (80977945).

404320055 is a wasteful number, since it uses less digits than its factorization.

404320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18993.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 404320055 is about 20107.7113317254. The cubic root of 404320055 is about 739.4493438115.

Adding to 404320055 its reverse (550023404), we get a palindrome (954343459).

The spelling of 404320055 in words is "four hundred four million, three hundred twenty thousand, fifty-five".