105055921 has 8 divisors (see below), whose sum is σ = 111168000. Its totient is φ = 99002160.

The previous prime is 105055901. The next prime is 105055949. The reversal of 105055921 is 129550501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105055921 - 2¹³ = 105047729 is a prime.

It is a super-2 number, since 2×105055921² = 22073493074316482, 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 105055921.

It is not an unprimeable number, because it can be changed into a prime (105055901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10846 + ... + 18103.

It is an arithmetic number, because the mean of its divisors is an integer number (13896000).

Almost surely, 2^105055921 is an apocalyptic number.

It is an amenable number.

105055921 is a deficient number, since it is larger than the sum of its proper divisors (6112079).

105055921 is a wasteful number, since it uses less digits than its factorization.

105055921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29159.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 105055921 is about 10249.6790681465. The cubic root of 105055921 is about 471.8531349663.

The spelling of 105055921 in words is "one hundred five million, fifty-five thousand, nine hundred twenty-one".