100505051 has 4 divisors (see below), whose sum is σ = 100525104. Its totient is φ = 100485000.

The previous prime is 100505047. The next prime is 100505057. The reversal of 100505051 is 150505001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100505051 - 2² = 100505047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100505057) 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 3 ways as a sum of consecutive naturals, for example, 4826 + ... + 14976.

It is an arithmetic number, because the mean of its divisors is an integer number (25131276).

Almost surely, 2^100505051 is an apocalyptic number.

100505051 is a deficient number, since it is larger than the sum of its proper divisors (20053).

100505051 is an equidigital number, since it uses as much as digits as its factorization.

100505051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20052.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 100505051 is about 10025.2207456993. The cubic root of 100505051 is about 464.9389845559.

The spelling of 100505051 in words is "one hundred million, five hundred five thousand, fifty-one".