100006551 has 6 divisors (see below), whose sum is σ = 144453920. Its totient is φ = 66671028.

The previous prime is 100006549. The next prime is 100006561. The reversal of 100006551 is 155600001.

100006551 is a `hidden beast` number, since 10 + 0 + 0 + 0 + 655 + 1 = 666.

It is not a de Polignac number, because 100006551 - 2¹ = 100006549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100006561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5555911 + ... + 5555928.

Almost surely, 2^100006551 is an apocalyptic number.

100006551 is a deficient number, since it is larger than the sum of its proper divisors (44447369).

100006551 is a wasteful number, since it uses less digits than its factorization.

100006551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111845 (or 11111842 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 100006551 is about 10000.3275446357. The cubic root of 100006551 is about 464.1690188228.

Adding to 100006551 its reverse (155600001), we get a palindrome (255606552).

The spelling of 100006551 in words is "one hundred million, six thousand, five hundred fifty-one".