105621163 has 4 divisors (see below), whose sum is σ = 105676000. Its totient is φ = 105566328.

The previous prime is 105621143. The next prime is 105621179. The reversal of 105621163 is 361126501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361126501 = 251 ⋅1438751.

It is a cyclic number.

It is not a de Polignac number, because 105621163 - 2²¹ = 103524011 is a prime.

It is a super-2 number, since 2×105621163² = 22311660146945138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105621143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24420 + ... + 28417.

It is an arithmetic number, because the mean of its divisors is an integer number (26419000).

Almost surely, 2^105621163 is an apocalyptic number.

105621163 is a deficient number, since it is larger than the sum of its proper divisors (54837).

105621163 is an equidigital number, since it uses as much as digits as its factorization.

105621163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54836.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 105621163 is about 10277.2157221691. The cubic root of 105621163 is about 472.6978733207.

Adding to 105621163 its reverse (361126501), we get a palindrome (466747664).

The spelling of 105621163 in words is "one hundred five million, six hundred twenty-one thousand, one hundred sixty-three".