55013133 has 12 divisors (see below), whose sum is σ = 85326720. Its totient is φ = 31435992.

The previous prime is 55013093. The next prime is 55013137. The reversal of 55013133 is 33131055.

It is a happy number.

It is not a de Polignac number, because 55013133 - 2⁹ = 55012621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55013137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186973 + ... + 187266.

It is an arithmetic number, because the mean of its divisors is an integer number (7110560).

Almost surely, 2^55013133 is an apocalyptic number.

It is an amenable number.

55013133 is a deficient number, since it is larger than the sum of its proper divisors (30313587).

55013133 is a wasteful number, since it uses less digits than its factorization.

55013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374256 (or 374249 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 21.

The square root of 55013133 is about 7417.0838609254. The cubic root of 55013133 is about 380.3255128640.

Adding to 55013133 its reverse (33131055), we get a palindrome (88144188).

The spelling of 55013133 in words is "fifty-five million, thirteen thousand, one hundred thirty-three".