5165865 has 12 divisors (see below), whose sum is σ = 8954244. Its totient is φ = 2755104.

The previous prime is 5165833. The next prime is 5165887. The reversal of 5165865 is 5685615.

5165865 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 2 ways, for example, as 992016 + 4173849 = 996^2 + 2043^2 .

It is not a de Polignac number, because 5165865 - 2⁵ = 5165833 is a prime.

It is a super-2 number, since 2×5165865² = 53372322396450, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57354 + ... + 57443.

It is an arithmetic number, because the mean of its divisors is an integer number (746187).

Almost surely, 2^5165865 is an apocalyptic number.

It is an amenable number.

5165865 is a deficient number, since it is larger than the sum of its proper divisors (3788379).

5165865 is a wasteful number, since it uses less digits than its factorization.

5165865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114808 (or 114805 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 5165865 is about 2272.8539328342. The cubic root of 5165865 is about 172.8678978610.

The spelling of 5165865 in words is "five million, one hundred sixty-five thousand, eight hundred sixty-five".