100045215 has 48 divisors (see below), whose sum is σ = 185253120. Its totient is φ = 49835520.

The previous prime is 100045213. The next prime is 100045223. The reversal of 100045215 is 512540001.

It is not a de Polignac number, because 100045215 - 2¹ = 100045213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100045213) 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 47 ways as a sum of consecutive naturals, for example, 39219 + ... + 41691.

It is an arithmetic number, because the mean of its divisors is an integer number (3859440).

Almost surely, 2^100045215 is an apocalyptic number.

100045215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100045215 is a deficient number, since it is larger than the sum of its proper divisors (85207905).

100045215 is a wasteful number, since it uses less digits than its factorization.

100045215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 100045215 is about 10002.2604945082. The cubic root of 100045215 is about 464.2288293000.

Adding to 100045215 its reverse (512540001), we get a palindrome (612585216).

The spelling of 100045215 in words is "one hundred million, forty-five thousand, two hundred fifteen".