100215545 has 8 divisors (see below), whose sum is σ = 120652224. Its totient is φ = 79910064.

The previous prime is 100215541. The next prime is 100215569. The reversal of 100215545 is 545512001.

It is a happy number.

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 100215545 - 2² = 100215541 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 100215545.

It is not an unprimeable number, because it can be changed into a prime (100215541) 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 7 ways as a sum of consecutive naturals, for example, 31109 + ... + 34178.

It is an arithmetic number, because the mean of its divisors is an integer number (15081528).

Almost surely, 2^100215545 is an apocalyptic number.

It is an amenable number.

100215545 is a deficient number, since it is larger than the sum of its proper divisors (20436679).

100215545 is an equidigital number, since it uses as much as digits as its factorization.

100215545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65599.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 100215545 is about 10010.7714487945. The cubic root of 100215545 is about 464.4921344622.

Adding to 100215545 its reverse (545512001), we get a palindrome (645727546).

The spelling of 100215545 in words is "one hundred million, two hundred fifteen thousand, five hundred forty-five".