55551404 has 12 divisors (see below), whose sum is σ = 98124264. Its totient is φ = 27515904.

The previous prime is 55551403. The next prime is 55551409. The reversal of 55551404 is 40415555.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55551401) 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, 64469 + ... + 65324.

It is an arithmetic number, because the mean of its divisors is an integer number (8177022).

Almost surely, 2^55551404 is an apocalyptic number.

It is an amenable number.

55551404 is a deficient number, since it is larger than the sum of its proper divisors (42572860).

55551404 is a wasteful number, since it uses less digits than its factorization.

55551404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129904 (or 129902 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 55551404 is about 7453.2814249832. The cubic root of 55551404 is about 381.5619092581.

Adding to 55551404 its reverse (40415555), we get a palindrome (95966959).

It can be divided in two parts, 55551 and 404, that added together give a palindrome (55955).

The spelling of 55551404 in words is "fifty-five million, five hundred fifty-one thousand, four hundred four".