100022509 has 4 divisors (see below), whose sum is σ = 105906204. Its totient is φ = 94138816.

The previous prime is 100022497. The next prime is 100022513. The reversal of 100022509 is 905220001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 905220001 = 7 ⋅129317143.

It can be written as a sum of positive squares in 2 ways, for example, as 87946884 + 12075625 = 9378^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 100022509 - 2⁵ = 100022477 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 (100022519) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2941822 + ... + 2941855.

It is an arithmetic number, because the mean of its divisors is an integer number (26476551).

Almost surely, 2^100022509 is an apocalyptic number.

It is an amenable number.

100022509 is a deficient number, since it is larger than the sum of its proper divisors (5883695).

100022509 is an equidigital number, since it uses as much as digits as its factorization.

100022509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883694.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 100022509 is about 10001.1253866752. The cubic root of 100022509 is about 464.1937065896.

The spelling of 100022509 in words is "one hundred million, twenty-two thousand, five hundred nine".