100444565 has 16 divisors (see below), whose sum is σ = 135451008. Its totient is φ = 70948416.

The previous prime is 100444543. The next prime is 100444571. The reversal of 100444565 is 565444001.

It is a cyclic number.

It is not a de Polignac number, because 100444565 - 2²² = 96250261 is a prime.

It is a super-2 number, since 2×100444565² = 20178221276078450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32099 + ... + 35088.

It is an arithmetic number, because the mean of its divisors is an integer number (8465688).

Almost surely, 2^100444565 is an apocalyptic number.

It is an amenable number.

100444565 is a deficient number, since it is larger than the sum of its proper divisors (35006443).

100444565 is a wasteful number, since it uses less digits than its factorization.

100444565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67228.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 100444565 is about 10022.2036000073. The cubic root of 100444565 is about 464.8456959017.

Adding to 100444565 its reverse (565444001), we get a palindrome (665888566).

The spelling of 100444565 in words is "one hundred million, four hundred forty-four thousand, five hundred sixty-five".