55018461220 has 12 divisors (see below), whose sum is σ = 115538768604. Its totient is φ = 22007384480.

The previous prime is 55018461209. The next prime is 55018461227. The reversal of 55018461220 is 2216481055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29061384676 + 25957076544 = 170474^2 + 161112^2 .

It is not an unprimeable number, because it can be changed into a prime (55018461227) 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 3 ways as a sum of consecutive naturals, for example, 1375461511 + ... + 1375461550.

It is an arithmetic number, because the mean of its divisors is an integer number (9628230717).

Almost surely, 2^55018461220 is an apocalyptic number.

It is an amenable number.

55018461220 is an abundant number, since it is smaller than the sum of its proper divisors (60520307384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55018461220 is a wasteful number, since it uses less digits than its factorization.

55018461220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750923070 (or 2750923068 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 55018461220 in words is "fifty-five billion, eighteen million, four hundred sixty-one thousand, two hundred twenty".