5143865 has 4 divisors (see below), whose sum is σ = 6172644. Its totient is φ = 4115088.

The previous prime is 5143849. The next prime is 5143871. The reversal of 5143865 is 5683415.

It is a happy number.

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 1290496 + 3853369 = 1136^2 + 1963^2 .

It is a cyclic number.

It is not a de Polignac number, because 5143865 - 2⁴ = 5143849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514382 + ... + 514391.

It is an arithmetic number, because the mean of its divisors is an integer number (1543161).

Almost surely, 2^5143865 is an apocalyptic number.

It is an amenable number.

5143865 is a deficient number, since it is larger than the sum of its proper divisors (1028779).

5143865 is a wasteful number, since it uses less digits than its factorization.

5143865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028778.

The product of its digits is 14400, while the sum is 32.

The square root of 5143865 is about 2268.0090387827. The cubic root of 5143865 is about 172.6221497085.

The spelling of 5143865 in words is "five million, one hundred forty-three thousand, eight hundred sixty-five".