1055555051100 has 72 divisors (see below), whose sum is σ = 3331715589888. Its totient is φ = 255892132800.

The previous prime is 1055555051051. The next prime is 1055555051107. The reversal of 1055555051100 is 11505555501.

It is a super-2 number, since 2×1055555051100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055555051107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159929284 + ... + 159935883.

Almost surely, 2^{1055555051100} is an apocalyptic number.

1055555051100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055555051100 is an abundant number, since it is smaller than the sum of its proper divisors (2276160538788).

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

1055555051100 is a wasteful number, since it uses less digits than its factorization.

1055555051100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319865195 (or 319865188 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 1055555051100 in words is "one trillion, fifty-five billion, five hundred fifty-five million, fifty-one thousand, one hundred".