105861001 has 8 divisors (see below), whose sum is σ = 109687808. Its totient is φ = 102060000.

The previous prime is 105860983. The next prime is 105861013. The reversal of 105861001 is 100168501.

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

It is a 6-Lehmer number, since φ(105861001) divides (105861001-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 105861001 - 2²⁵ = 72306569 is a prime.

It is a super-2 number, since 2×105861001² = 22413103065444002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105861401) 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, 2101 + ... + 14701.

It is an arithmetic number, because the mean of its divisors is an integer number (13710976).

Almost surely, 2^105861001 is an apocalyptic number.

105861001 is the 8401-st pentagonal number.

It is an amenable number.

105861001 is a deficient number, since it is larger than the sum of its proper divisors (3826807).

105861001 is a wasteful number, since it uses less digits than its factorization.

105861001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12903.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 105861001 is about 10288.8775383907. The cubic root of 105861001 is about 473.0553938703.

The spelling of 105861001 in words is "one hundred five million, eight hundred sixty-one thousand, one".