55555435120 has 20 divisors (see below), whose sum is σ = 129166386840. Its totient is φ = 22222174016.

The previous prime is 55555435093. The next prime is 55555435127. The reversal of 55555435120 is 2153455555.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555435127) 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, 347221390 + ... + 347221549.

It is an arithmetic number, because the mean of its divisors is an integer number (6458319342).

Almost surely, 2^55555435120 is an apocalyptic number.

It is an amenable number.

55555435120 is an abundant number, since it is smaller than the sum of its proper divisors (73610951720).

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

55555435120 is a wasteful number, since it uses less digits than its factorization.

55555435120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694442952 (or 694442946 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 40.

It can be divided in two parts, 55555435 and 120, that added together give a palindrome (55555555).

The spelling of 55555435120 in words is "fifty-five billion, five hundred fifty-five million, four hundred thirty-five thousand, one hundred twenty".