5170861 has 4 divisors (see below), whose sum is σ = 5310652. Its totient is φ = 5031072.

The previous prime is 5170853. The next prime is 5170871. The reversal of 5170861 is 1680715.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1680715 = 5 ⋅336143.

It can be written as a sum of positive squares in 2 ways, for example, as 4818025 + 352836 = 2195^2 + 594^2 .

It is a cyclic number.

It is not a de Polignac number, because 5170861 - 2³ = 5170853 is a prime.

It is a Duffinian number.

5170861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5170871) 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, 69840 + ... + 69913.

It is an arithmetic number, because the mean of its divisors is an integer number (1327663).

Almost surely, 2^5170861 is an apocalyptic number.

It is an amenable number.

5170861 is a deficient number, since it is larger than the sum of its proper divisors (139791).

5170861 is a wasteful number, since it uses less digits than its factorization.

5170861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139790.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 5170861 is about 2273.9527259818. The cubic root of 5170861 is about 172.9236077793.

The spelling of 5170861 in words is "five million, one hundred seventy thousand, eight hundred sixty-one".