55173313 has 16 divisors (see below), whose sum is σ = 63168336. Its totient is φ = 47738880.

The previous prime is 55173299. The next prime is 55173323. The reversal of 55173313 is 31337155.

It can be written as a sum of positive squares in 8 ways, for example, as 6411024 + 48762289 = 2532^2 + 6983^2 .

It is a cyclic number.

It is not a de Polignac number, because 55173313 - 2⁵ = 55173281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55173323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92745 + ... + 93337.

It is an arithmetic number, because the mean of its divisors is an integer number (3948021).

Almost surely, 2^55173313 is an apocalyptic number.

It is an amenable number.

55173313 is a deficient number, since it is larger than the sum of its proper divisors (7995023).

55173313 is a wasteful number, since it uses less digits than its factorization.

55173313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its digits is 4725, while the sum is 28.

The square root of 55173313 is about 7427.8740565521. The cubic root of 55173313 is about 380.6942824407.

The spelling of 55173313 in words is "fifty-five million, one hundred seventy-three thousand, three hundred thirteen".