55275133 has 4 divisors (see below), whose sum is σ = 56053728. Its totient is φ = 54496540.

The previous prime is 55275127. The next prime is 55275221. The reversal of 55275133 is 33157255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55275133 - 2²⁵ = 21720701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55275095 and 55275104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55275533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389191 + ... + 389332.

It is an arithmetic number, because the mean of its divisors is an integer number (14013432).

Almost surely, 2^55275133 is an apocalyptic number.

It is an amenable number.

55275133 is a deficient number, since it is larger than the sum of its proper divisors (778595).

55275133 is an equidigital number, since it uses as much as digits as its factorization.

55275133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778594.

The product of its digits is 15750, while the sum is 31.

The square root of 55275133 is about 7434.7248099711. The cubic root of 55275133 is about 380.9283235584.

The spelling of 55275133 in words is "fifty-five million, two hundred seventy-five thousand, one hundred thirty-three".