100555056 has 90 divisors (see below), whose sum is σ = 327382692. Its totient is φ = 28728000.

The previous prime is 100555031. The next prime is 100555061. The reversal of 100555056 is 650555001.

100555056 is a `hidden beast` number, since 100 + 5 + 550 + 5 + 6 = 666.

It is a super-2 number, since 2×100555056² = 20222638574326272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70 + ... + 14181.

Almost surely, 2^100555056 is an apocalyptic number.

100555056 is a gapful number since it is divisible by the number (16) 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 100555056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163691346).

100555056 is an abundant number, since it is smaller than the sum of its proper divisors (226827636).

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

100555056 is a wasteful number, since it uses less digits than its factorization.

100555056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14279 (or 14263 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 100555056 is about 10027.7143956138. The cubic root of 100555056 is about 465.0160799157.

Subtracting 100555056 from its reverse (650555001), we obtain a palindrome (549999945).

The spelling of 100555056 in words is "one hundred million, five hundred fifty-five thousand, fifty-six".