100808551 has 2 divisors, whose sum is σ = 100808552. Its totient is φ = 100808550.

The previous prime is 100808549. The next prime is 100808567. The reversal of 100808551 is 155808001.

It is a weak prime.

It is an emirp because it is prime and its reverse (155808001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100808551 - 2¹ = 100808549 is a prime.

Together with 100808549, it forms a pair of twin primes.

It is equal to p_5805208 and since 100808551 and 5805208 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100808501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50404275 + 50404276.

It is an arithmetic number, because the mean of its divisors is an integer number (50404276).

Almost surely, 2^100808551 is an apocalyptic number.

100808551 is a deficient number, since it is larger than the sum of its proper divisors (1).

100808551 is an equidigital number, since it uses as much as digits as its factorization.

100808551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 28.

The square root of 100808551 is about 10040.3461593712. The cubic root of 100808551 is about 465.4065139001.

The spelling of 100808551 in words is "one hundred million, eight hundred eight thousand, five hundred fifty-one".