55575123211 has 16 divisors (see below), whose sum is σ = 57885141600. Its totient is φ = 53292556800.

The previous prime is 55575123203. The next prime is 55575123281. The reversal of 55575123211 is 11232157555.

It is a cyclic number.

It is not a de Polignac number, because 55575123211 - 2³ = 55575123203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55575123281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2638341 + ... + 2659321.

It is an arithmetic number, because the mean of its divisors is an integer number (3617821350).

Almost surely, 2^55575123211 is an apocalyptic number.

55575123211 is a deficient number, since it is larger than the sum of its proper divisors (2310018389).

55575123211 is a wasteful number, since it uses less digits than its factorization.

55575123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21630.

The product of its digits is 52500, while the sum is 37.

The spelling of 55575123211 in words is "fifty-five billion, five hundred seventy-five million, one hundred twenty-three thousand, two hundred eleven".