100001509 has 8 divisors (see below), whose sum is σ = 101843928. Its totient is φ = 98165760.

The previous prime is 100001507. The next prime is 100001533. The reversal of 100001509 is 905100001.

It can be written as a sum of positive squares in 4 ways, for example, as 1932100 + 98069409 = 1390^2 + 9903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100001509 - 2¹ = 100001507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100001492 and 100001501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36309 + ... + 38965.

It is an arithmetic number, because the mean of its divisors is an integer number (12730491).

Almost surely, 2^100001509 is an apocalyptic number.

It is an amenable number.

100001509 is a deficient number, since it is larger than the sum of its proper divisors (1842419).

100001509 is an equidigital number, since it uses as much as digits as its factorization.

100001509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 100001509 is about 10000.0754497154. The cubic root of 100001509 is about 464.1612180687.

The spelling of 100001509 in words is "one hundred million, one thousand, five hundred nine".