55224273121 has 4 divisors (see below), whose sum is σ = 55351812292. Its totient is φ = 55096733952.

The previous prime is 55224273109. The next prime is 55224273193. The reversal of 55224273121 is 12137242255.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2147024896 + 53077248225 = 46336^2 + 230385^2 .

It is a cyclic number.

It is not a de Polignac number, because 55224273121 - 2⁵ = 55224273089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55227273121) 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, 63768936 + ... + 63769801.

It is an arithmetic number, because the mean of its divisors is an integer number (13837953073).

Almost surely, 2^55224273121 is an apocalyptic number.

It is an amenable number.

55224273121 is a deficient number, since it is larger than the sum of its proper divisors (127539171).

55224273121 is a wasteful number, since it uses less digits than its factorization.

55224273121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127539170.

The product of its digits is 33600, while the sum is 34.

The spelling of 55224273121 in words is "fifty-five billion, two hundred twenty-four million, two hundred seventy-three thousand, one hundred twenty-one".