55500133 has 8 divisors (see below), whose sum is σ = 60442200. Its totient is φ = 50654208.

The previous prime is 55500089. The next prime is 55500139. The reversal of 55500133 is 33100555.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1595169 + 53904964 = 1263^2 + 7342^2 .

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 55500133 - 2²¹ = 53402981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22828 + ... + 25141.

It is an arithmetic number, because the mean of its divisors is an integer number (7555275).

Almost surely, 2^55500133 is an apocalyptic number.

It is an amenable number.

55500133 is a deficient number, since it is larger than the sum of its proper divisors (4942067).

55500133 is a wasteful number, since it uses less digits than its factorization.

55500133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48071.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 55500133 is about 7449.8411392459. The cubic root of 55500133 is about 381.4444859896. Note that the first 4 decimals are identical.

Adding to 55500133 its reverse (33100555), we get a palindrome (88600688).

The spelling of 55500133 in words is "fifty-five million, five hundred thousand, one hundred thirty-three".