55505050435020 has 48 divisors (see below), whose sum is σ = 160773249540960. Its totient is φ = 14290955513856.

The previous prime is 55505050435019. The next prime is 55505050435027. The reversal of 55505050435020 is 2053405050555.

It is a super-2 number, since 2×55505050435020² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55505050435020.

It is not an unprimeable number, because it can be changed into a prime (55505050435027) 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, 15949725397 + ... + 15949728876.

It is an arithmetic number, because the mean of its divisors is an integer number (3349442698770).

Almost surely, 2^{55505050435020} is an apocalyptic number.

It is an amenable number.

55505050435020 is an abundant number, since it is smaller than the sum of its proper divisors (105268199105940).

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

55505050435020 is a wasteful number, since it uses less digits than its factorization.

55505050435020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31899454314 (or 31899454312 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 39.

Adding to 55505050435020 its reverse (2053405050555), we get a palindrome (57558455485575).

The spelling of 55505050435020 in words is "fifty-five trillion, five hundred five billion, fifty million, four hundred thirty-five thousand, twenty".