1000055504550 has 48 divisors (see below), whose sum is σ = 2547168412752. Its totient is φ = 259473859200.

The previous prime is 1000055504537. The next prime is 1000055504621. The reversal of 1000055504550 is 554055500001.

It is a super-2 number, since 2×1000055504550² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90089541 + ... + 90100640.

It is an arithmetic number, because the mean of its divisors is an integer number (53066008599).

Almost surely, 2^{1000055504550} is an apocalyptic number.

1000055504550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000055504550 is an abundant number, since it is smaller than the sum of its proper divisors (1547112908202).

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

1000055504550 is a wasteful number, since it uses less digits than its factorization.

1000055504550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180190233 (or 180190228 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The spelling of 1000055504550 in words is "one trillion, fifty-five million, five hundred four thousand, five hundred fifty".