55210531220240 has 80 divisors (see below), whose sum is σ = 140245836924096. Its totient is φ = 20046183590400.

The previous prime is 55210531220203. The next prime is 55210531220261. The reversal of 55210531220240 is 4202213501255.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 55210531220197 and 55210531220206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46876142 + ... + 48039501.

Almost surely, 2^{55210531220240} is an apocalyptic number.

It is an amenable number.

55210531220240 is an abundant number, since it is smaller than the sum of its proper divisors (85035305703856).

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

55210531220240 is a wasteful number, since it uses less digits than its factorization.

55210531220240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94916328 (or 94916322 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 55210531220240 its reverse (4202213501255), we get a palindrome (59412744721495).

The spelling of 55210531220240 in words is "fifty-five trillion, two hundred ten billion, five hundred thirty-one million, two hundred twenty thousand, two hundred forty".