100566550 has 24 divisors (see below), whose sum is σ = 213776496. Its totient is φ = 34479840.

The previous prime is 100566541. The next prime is 100566553. The reversal of 100566550 is 55665001.

It is a super-2 number, since 2×100566550² = 20227261957805000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100566553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143317 + ... + 144016.

It is an arithmetic number, because the mean of its divisors is an integer number (8907354).

Almost surely, 2^100566550 is an apocalyptic number.

100566550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100566550 is an abundant number, since it is smaller than the sum of its proper divisors (113209946).

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

100566550 is a wasteful number, since it uses less digits than its factorization.

100566550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287352 (or 287347 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 100566550 is about 10028.2874908929. The cubic root of 100566550 is about 465.0337972120.

The spelling of 100566550 in words is "one hundred million, five hundred sixty-six thousand, five hundred fifty".