105001609 has 4 divisors (see below), whose sum is σ = 105803280. Its totient is φ = 104199940.

The previous prime is 105001511. The next prime is 105001621. The reversal of 105001609 is 906100501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105001609 - 2⁹ = 105001097 is a prime.

It is a super-2 number, since 2×105001609² = 22050675785177762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105001609.

It is not an unprimeable number, because it can be changed into a prime (105001649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400639 + ... + 400900.

It is an arithmetic number, because the mean of its divisors is an integer number (26450820).

Almost surely, 2^105001609 is an apocalyptic number.

It is an amenable number.

105001609 is a deficient number, since it is larger than the sum of its proper divisors (801671).

105001609 is an equidigital number, since it uses as much as digits as its factorization.

105001609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801670.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 105001609 is about 10247.0292768197. The cubic root of 105001609 is about 471.7718077875.

The spelling of 105001609 in words is "one hundred five million, one thousand, six hundred nine".