100550556 has 18 divisors (see below), whose sum is σ = 254169552. Its totient is φ = 33516840.

The previous prime is 100550543. The next prime is 100550561. The reversal of 100550556 is 655055001.

100550556 is a `hidden beast` number, since 100 + 5 + 5 + 0 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×100550556² = 20220828623818272, which 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 (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1396500 + ... + 1396571.

Almost surely, 2^100550556 is an apocalyptic number.

It is an amenable number.

100550556 is an abundant number, since it is smaller than the sum of its proper divisors (153618996).

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

100550556 is a wasteful number, since it uses less digits than its factorization.

100550556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793081 (or 2793076 counting only the distinct ones).

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

The square root of 100550556 is about 10027.4900149539. The cubic root of 100550556 is about 465.0091430738.

The spelling of 100550556 in words is "one hundred million, five hundred fifty thousand, five hundred fifty-six".