55173311 has 4 divisors (see below), whose sum is σ = 55188624. Its totient is φ = 55158000.

The previous prime is 55173299. The next prime is 55173323. The reversal of 55173311 is 11337155.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (55173299) and next prime (55173323).

It is a cyclic number.

It is not a de Polignac number, because 55173311 - 2⁶ = 55173247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55173011) 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, 1046 + ... + 10556.

It is an arithmetic number, because the mean of its divisors is an integer number (13797156).

Almost surely, 2^55173311 is an apocalyptic number.

55173311 is a deficient number, since it is larger than the sum of its proper divisors (15313).

55173311 is an equidigital number, since it uses as much as digits as its factorization.

55173311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15312.

The product of its digits is 1575, while the sum is 26.

The square root of 55173311 is about 7427.8739219241. The cubic root of 55173311 is about 380.6942778407.

The spelling of 55173311 in words is "fifty-five million, one hundred seventy-three thousand, three hundred eleven".