105555813 has 8 divisors (see below), whose sum is σ = 153535776. Its totient is φ = 63973200.

The previous prime is 105555797. The next prime is 105555817. The reversal of 105555813 is 318555501.

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

It is not a de Polignac number, because 105555813 - 2⁴ = 105555797 is a prime.

It is a super-2 number, since 2×105555813² = 22284059316181938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3198661 = 105555813 / (1 + 0 + 5 + 5 + 5 + 5 + 8 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105555817) 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, 1599298 + ... + 1599363.

It is an arithmetic number, because the mean of its divisors is an integer number (19191972).

Almost surely, 2^105555813 is an apocalyptic number.

It is an amenable number.

105555813 is a deficient number, since it is larger than the sum of its proper divisors (47979963).

105555813 is a wasteful number, since it uses less digits than its factorization.

105555813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198675.

The product of its (nonzero) digits is 15000, while the sum is 33.

The square root of 105555813 is about 10274.0358671751. The cubic root of 105555813 is about 472.6003638877.

The spelling of 105555813 in words is "one hundred five million, five hundred fifty-five thousand, eight hundred thirteen".