5418821 has 4 divisors (see below), whose sum is σ = 5484192. Its totient is φ = 5353452.

The previous prime is 5418799. The next prime is 5418851. The reversal of 5418821 is 1288145.

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 a cyclic number.

It is not a de Polignac number, because 5418821 - 2⁶ = 5418757 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 (5418851) 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, 32561 + ... + 32726.

It is an arithmetic number, because the mean of its divisors is an integer number (1371048).

Almost surely, 2^5418821 is an apocalyptic number.

It is an amenable number.

5418821 is a deficient number, since it is larger than the sum of its proper divisors (65371).

5418821 is an equidigital number, since it uses as much as digits as its factorization.

5418821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65370.

The product of its digits is 2560, while the sum is 29.

The square root of 5418821 is about 2327.8361196613. The cubic root of 5418821 is about 175.6446536433.

The spelling of 5418821 in words is "five million, four hundred eighteen thousand, eight hundred twenty-one".