5105861 has 4 divisors (see below), whose sum is σ = 5202252. Its totient is φ = 5009472.

The previous prime is 5105857. The next prime is 5105879. The reversal of 5105861 is 1685015.

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 2825761 + 2280100 = 1681^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 5105861 - 2² = 5105857 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5105861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5105161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48116 + ... + 48221.

It is an arithmetic number, because the mean of its divisors is an integer number (1300563).

Almost surely, 2^5105861 is an apocalyptic number.

It is an amenable number.

5105861 is a deficient number, since it is larger than the sum of its proper divisors (96391).

5105861 is an equidigital number, since it uses as much as digits as its factorization.

5105861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96390.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 5105861 is about 2259.6152327332. The cubic root of 5105861 is about 172.1959750188.

The spelling of 5105861 in words is "five million, one hundred five thousand, eight hundred sixty-one".