55312183 has 4 divisors (see below), whose sum is σ = 55747840. Its totient is φ = 54876528.

The previous prime is 55312181. The next prime is 55312189. The reversal of 55312183 is 38121355.

55312183 = T₃₃₇ + T₃₃₈ + ... + T₇₁₇.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38121355 = 5 ⋅7624271.

It is a cyclic number.

It is not a de Polignac number, because 55312183 - 2¹ = 55312181 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 (55312181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217638 + ... + 217891.

It is an arithmetic number, because the mean of its divisors is an integer number (13936960).

Almost surely, 2^55312183 is an apocalyptic number.

55312183 is a deficient number, since it is larger than the sum of its proper divisors (435657).

55312183 is a wasteful number, since it uses less digits than its factorization.

55312183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435656.

The product of its digits is 3600, while the sum is 28.

The square root of 55312183 is about 7437.2160786144. The cubic root of 55312183 is about 381.0134145175.

The spelling of 55312183 in words is "fifty-five million, three hundred twelve thousand, one hundred eighty-three".