100505506 has 4 divisors (see below), whose sum is σ = 150758262. Its totient is φ = 50252752.

The previous prime is 100505467. The next prime is 100505527. The reversal of 100505506 is 605505001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605505001 = 1733 ⋅349397.

It can be written as a sum of positive squares in only one way, i.e., 93296281 + 7209225 = 9659^2 + 2685^2 .

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 as a sum of consecutive naturals, namely, 25126375 + ... + 25126378.

Almost surely, 2^100505506 is an apocalyptic number.

100505506 is a deficient number, since it is larger than the sum of its proper divisors (50252756).

100505506 is an equidigital number, since it uses as much as digits as its factorization.

100505506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50252755.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 100505506 is about 10025.2434384408. The cubic root of 100505506 is about 464.9396861688.

The spelling of 100505506 in words is "one hundred million, five hundred five thousand, five hundred six".