105055621 has 8 divisors (see below), whose sum is σ = 118303488. Its totient is φ = 92424000.

The previous prime is 105055591. The next prime is 105055649. The reversal of 105055621 is 126550501.

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 105055621 - 2⁹ = 105055109 is a prime.

It is a super-2 number, since 2×105055621² = 22073367007391282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105055021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153700 + ... + 154381.

It is an arithmetic number, because the mean of its divisors is an integer number (14787936).

Almost surely, 2^105055621 is an apocalyptic number.

105055621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105055621 is a deficient number, since it is larger than the sum of its proper divisors (13247867).

105055621 is a wasteful number, since it uses less digits than its factorization.

105055621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308123.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 105055621 is about 10249.6644335315. The cubic root of 105055621 is about 471.8526858211.

The spelling of 105055621 in words is "one hundred five million, fifty-five thousand, six hundred twenty-one".