105621153 has 16 divisors (see below), whose sum is σ = 162668736. Its totient is φ = 60247040.

The previous prime is 105621143. The next prime is 105621179. The reversal of 105621153 is 351126501.

It is a cyclic number.

It is not a de Polignac number, because 105621153 - 2⁴ = 105621137 is a prime.

It is a super-2 number, since 2×105621153² = 22311655922098818, which contains 22 as substring.

It is a Curzon number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93576 + ... + 94697.

It is an arithmetic number, because the mean of its divisors is an integer number (10166796).

Almost surely, 2^105621153 is an apocalyptic number.

It is an amenable number.

105621153 is a deficient number, since it is larger than the sum of its proper divisors (57047583).

105621153 is a wasteful number, since it uses less digits than its factorization.

105621153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188304.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 105621153 is about 10277.2152356560. The cubic root of 105621153 is about 472.6978584027.

Adding to 105621153 its reverse (351126501), we get a palindrome (456747654).

The spelling of 105621153 in words is "one hundred five million, six hundred twenty-one thousand, one hundred fifty-three".