5165613 has 10 divisors (see below), whose sum is σ = 7716654. Its totient is φ = 3443688.

The previous prime is 5165597. The next prime is 5165621. The reversal of 5165613 is 3165615.

It is a happy number.

5165613 is a `hidden beast` number, since 5 + 1 + 656 + 1 + 3 = 666.

5165613 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3143529 + 2022084 = 1773^2 + 1422^2 .

It is not a de Polignac number, because 5165613 - 2⁴ = 5165597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

5165613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165653) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31806 + ... + 31967.

Almost surely, 2^5165613 is an apocalyptic number.

It is an amenable number.

5165613 is a deficient number, since it is larger than the sum of its proper divisors (2551041).

5165613 is an equidigital number, since it uses as much as digits as its factorization.

5165613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63785 (or 63776 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 5165613 is about 2272.7984952477. The cubic root of 5165613 is about 172.8650868817.

It can be divided in two parts, 5165 and 613, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 5165613 in words is "five million, one hundred sixty-five thousand, six hundred thirteen".