404115551 has 16 divisors (see below), whose sum is σ = 505880640. Its totient is φ = 314764800.

The previous prime is 404115529. The next prime is 404115563. The reversal of 404115551 is 155511404.

It is not a de Polignac number, because 404115551 - 2⁶ = 404115487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404115551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404115521) 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 in 15 ways as a sum of consecutive naturals, for example, 55100 + ... + 62001.

It is an arithmetic number, because the mean of its divisors is an integer number (31617540).

Almost surely, 2^404115551 is an apocalyptic number.

404115551 is a deficient number, since it is larger than the sum of its proper divisors (101765089).

404115551 is a wasteful number, since it uses less digits than its factorization.

404115551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117154.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 404115551 is about 20102.6254752955. The cubic root of 404115551 is about 739.3246522877.

Adding to 404115551 its reverse (155511404), we get a palindrome (559626955).

The spelling of 404115551 in words is "four hundred four million, one hundred fifteen thousand, five hundred fifty-one".