105321155 has 4 divisors (see below), whose sum is σ = 126385392. Its totient is φ = 84256920.

The previous prime is 105321143. The next prime is 105321179. The reversal of 105321155 is 551123501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551123501 = 73 ⋅7549637.

It is not a de Polignac number, because 105321155 - 2²⁰ = 104272579 is a prime.

It is a super-2 number, since 2×105321155² = 22185091381068050, which contains 22 as substring.

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 105321155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10532111 + ... + 10532120.

It is an arithmetic number, because the mean of its divisors is an integer number (31596348).

Almost surely, 2^105321155 is an apocalyptic number.

105321155 is a deficient number, since it is larger than the sum of its proper divisors (21064237).

105321155 is an equidigital number, since it uses as much as digits as its factorization.

105321155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21064236.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 105321155 is about 10262.6095609255. The cubic root of 105321155 is about 472.2498960996.

Adding to 105321155 its reverse (551123501), we get a palindrome (656444656).

The spelling of 105321155 in words is "one hundred five million, three hundred twenty-one thousand, one hundred fifty-five".