55100405304 has 512 divisors, whose sum is σ = 193093632000. Its totient is φ = 14194704384.

The previous prime is 55100405263. The next prime is 55100405309. The reversal of 55100405304 is 40350400155.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55100405309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 143865097 + ... + 143865479.

It is an arithmetic number, because the mean of its divisors is an integer number (377136000).

Almost surely, 2^55100405304 is an apocalyptic number.

55100405304 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55100405304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96546816000).

55100405304 is an abundant number, since it is smaller than the sum of its proper divisors (137993226696).

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

55100405304 is a wasteful number, since it uses less digits than its factorization.

55100405304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 55100405304 its reverse (40350400155), we get a palindrome (95450805459).

The spelling of 55100405304 in words is "fifty-five billion, one hundred million, four hundred five thousand, three hundred four".