105554993 has 4 divisors (see below), whose sum is σ = 105580788. Its totient is φ = 105529200.

The previous prime is 105554987. The next prime is 105555011. The reversal of 105554993 is 399455501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37112464 + 68442529 = 6092^2 + 8273^2 .

It is a cyclic number.

It is not a de Polignac number, because 105554993 - 2⁶ = 105554929 is a prime.

It is a super-2 number, since 2×105554993² = 22283713094460098, 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 105554993.

It is not an unprimeable number, because it can be changed into a prime (105554923) 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 3 ways as a sum of consecutive naturals, for example, 5246 + ... + 15447.

It is an arithmetic number, because the mean of its divisors is an integer number (26395197).

Almost surely, 2^105554993 is an apocalyptic number.

It is an amenable number.

105554993 is a deficient number, since it is larger than the sum of its proper divisors (25795).

105554993 is an equidigital number, since it uses as much as digits as its factorization.

105554993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25794.

The product of its (nonzero) digits is 121500, while the sum is 41.

The square root of 105554993 is about 10273.9959606766. The cubic root of 105554993 is about 472.5991401014.

The spelling of 105554993 in words is "one hundred five million, five hundred fifty-four thousand, nine hundred ninety-three".