105503215 has 8 divisors (see below), whose sum is σ = 127411200. Its totient is φ = 83864352.

The previous prime is 105503201. The next prime is 105503263. The reversal of 105503215 is 512305501.

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 105503215 - 2⁵ = 105503183 is a prime.

It is a super-2 number, since 2×105503215² = 22261856750672450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 66415 + ... + 67984.

It is an arithmetic number, because the mean of its divisors is an integer number (15926400).

Almost surely, 2^105503215 is an apocalyptic number.

105503215 is a deficient number, since it is larger than the sum of its proper divisors (21907985).

105503215 is a wasteful number, since it uses less digits than its factorization.

105503215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134561.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 105503215 is about 10271.4757946461. The cubic root of 105503215 is about 472.5218526142.

Adding to 105503215 its reverse (512305501), we get a palindrome (617808716).

The spelling of 105503215 in words is "one hundred five million, five hundred three thousand, two hundred fifteen".