55404133 has 16 divisors (see below), whose sum is σ = 61067520. Its totient is φ = 50072256.

The previous prime is 55404121. The next prime is 55404137. The reversal of 55404133 is 33140455.

It is a cyclic number.

It is not a de Polignac number, because 55404133 - 2⁵ = 55404101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55404098 and 55404107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55404137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36516 + ... + 38002.

It is an arithmetic number, because the mean of its divisors is an integer number (3816720).

Almost surely, 2^55404133 is an apocalyptic number.

55404133 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55404133 is a deficient number, since it is larger than the sum of its proper divisors (5663387).

55404133 is a wasteful number, since it uses less digits than its factorization.

55404133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 55404133 is about 7443.3952602290. The cubic root of 55404133 is about 381.2244276317.

Adding to 55404133 its reverse (33140455), we get a palindrome (88544588).

The spelling of 55404133 in words is "fifty-five million, four hundred four thousand, one hundred thirty-three".