404041553 has 2 divisors, whose sum is σ = 404041554. Its totient is φ = 404041552.

The previous prime is 404041549. The next prime is 404041663. The reversal of 404041553 is 355140404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355209409 + 48832144 = 18847^2 + 6988^2 .

It is a cyclic number.

It is not a de Polignac number, because 404041553 - 2² = 404041549 is a prime.

It is not a weakly prime, because it can be changed into another prime (404041513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202020776 + 202020777.

It is an arithmetic number, because the mean of its divisors is an integer number (202020777).

Almost surely, 2^404041553 is an apocalyptic number.

It is an amenable number.

404041553 is a deficient number, since it is larger than the sum of its proper divisors (1).

404041553 is an equidigital number, since it uses as much as digits as its factorization.

404041553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 404041553 is about 20100.7848851730. The cubic root of 404041553 is about 739.2795233758.

Adding to 404041553 its reverse (355140404), we get a palindrome (759181957).

The spelling of 404041553 in words is "four hundred four million, forty-one thousand, five hundred fifty-three".