55042241121 has 80 divisors (see below), whose sum is σ = 99017804160. Its totient is φ = 29766528000.

The previous prime is 55042241057. The next prime is 55042241123. The reversal of 55042241121 is 12114224055.

It is a happy number.

It is not a de Polignac number, because 55042241121 - 2⁶ = 55042241057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55042241123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13755121 + ... + 13759121.

It is an arithmetic number, because the mean of its divisors is an integer number (1237722552).

Almost surely, 2^55042241121 is an apocalyptic number.

It is an amenable number.

55042241121 is a deficient number, since it is larger than the sum of its proper divisors (43975563039).

55042241121 is a wasteful number, since it uses less digits than its factorization.

55042241121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316 (or 5307 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 55042241121 its reverse (12114224055), we get a palindrome (67156465176).

The spelling of 55042241121 in words is "fifty-five billion, forty-two million, two hundred forty-one thousand, one hundred twenty-one".