55120205 has 16 divisors (see below), whose sum is σ = 80040960. Its totient is φ = 35572992.

The previous prime is 55120189. The next prime is 55120283. The reversal of 55120205 is 50202155.

It is not a de Polignac number, because 55120205 - 2⁴ = 55120189 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 45725 + ... + 46914.

It is an arithmetic number, because the mean of its divisors is an integer number (5002560).

Almost surely, 2^55120205 is an apocalyptic number.

It is an amenable number.

55120205 is a deficient number, since it is larger than the sum of its proper divisors (24920755).

55120205 is a wasteful number, since it uses less digits than its factorization.

55120205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92668.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 55120205 is about 7424.2982833396. The cubic root of 55120205 is about 380.5720953339.

The spelling of 55120205 in words is "fifty-five million, one hundred twenty thousand, two hundred five".