100445517 has 6 divisors (see below), whose sum is σ = 145087982. Its totient is φ = 66963672.

The previous prime is 100445509. The next prime is 100445539. The reversal of 100445517 is 715544001.

It is a happy number.

100445517 is a `hidden beast` number, since 100 + 4 + 4 + 551 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 82246761 + 18198756 = 9069^2 + 4266^2 .

It is not a de Polignac number, because 100445517 - 2³ = 100445509 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 (100445557) 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 5 ways as a sum of consecutive naturals, for example, 5580298 + ... + 5580315.

Almost surely, 2^100445517 is an apocalyptic number.

It is an amenable number.

100445517 is a deficient number, since it is larger than the sum of its proper divisors (44642465).

100445517 is a wasteful number, since it uses less digits than its factorization.

100445517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160619 (or 11160616 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 100445517 is about 10022.2510944398. The cubic root of 100445517 is about 464.8471644787.

Adding to 100445517 its reverse (715544001), we get a palindrome (815989518).

The spelling of 100445517 in words is "one hundred million, four hundred forty-five thousand, five hundred seventeen".