5218261 has 4 divisors (see below), whose sum is σ = 5386624. Its totient is φ = 5049900.

The previous prime is 5218247. The next prime is 5218271. The reversal of 5218261 is 1628125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5218261 - 2⁵ = 5218229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5218211) 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, 84135 + ... + 84196.

It is an arithmetic number, because the mean of its divisors is an integer number (1346656).

Almost surely, 2^5218261 is an apocalyptic number.

It is an amenable number.

5218261 is a deficient number, since it is larger than the sum of its proper divisors (168363).

5218261 is a wasteful number, since it uses less digits than its factorization.

5218261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168362.

The product of its digits is 960, while the sum is 25.

The square root of 5218261 is about 2284.3513302467. The cubic root of 5218261 is about 173.4503840387.

The spelling of 5218261 in words is "five million, two hundred eighteen thousand, two hundred sixty-one".