100395565 has 4 divisors (see below), whose sum is σ = 120474684. Its totient is φ = 80316448.

The previous prime is 100395553. The next prime is 100395587. The reversal of 100395565 is 565593001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17330569 + 83064996 = 4163^2 + 9114^2 .

It is a cyclic number.

It is not a de Polignac number, because 100395565 - 2¹⁵ = 100362797 is a prime.

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 100395565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10039552 + ... + 10039561.

It is an arithmetic number, because the mean of its divisors is an integer number (30118671).

Almost surely, 2^100395565 is an apocalyptic number.

It is an amenable number.

100395565 is a deficient number, since it is larger than the sum of its proper divisors (20079119).

100395565 is an equidigital number, since it uses as much as digits as its factorization.

100395565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20079118.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 100395565 is about 10019.7587296302. The cubic root of 100395565 is about 464.7700948511.

The spelling of 100395565 in words is "one hundred million, three hundred ninety-five thousand, five hundred sixty-five".