55010551100 has 72 divisors (see below), whose sum is σ = 120598562448. Its totient is φ = 21778675200.

The previous prime is 55010551091. The next prime is 55010551121. The reversal of 55010551100 is 115501055.

It is a happy number.

It is a super-2 number, since 2×55010551100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 18627224 + ... + 18630176.

It is an arithmetic number, because the mean of its divisors is an integer number (1674980034).

Almost surely, 2^55010551100 is an apocalyptic number.

55010551100 is a gapful number since it is divisible by the number (50) 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 55010551100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60299281224).

55010551100 is an abundant number, since it is smaller than the sum of its proper divisors (65588011348).

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

55010551100 is a wasteful number, since it uses less digits than its factorization.

55010551100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 55010551100 in words is "fifty-five billion, ten million, five hundred fifty-one thousand, one hundred".