5221921 has 8 divisors (see below), whose sum is σ = 5417280. Its totient is φ = 5029488.

The previous prime is 5221891. The next prime is 5221927. The reversal of 5221921 is 1291225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5221921 - 2⁵ = 5221889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5221892 and 5221901.

It is not an unprimeable number, because it can be changed into a prime (5221927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3300 + ... + 4618.

It is an arithmetic number, because the mean of its divisors is an integer number (677160).

Almost surely, 2^5221921 is an apocalyptic number.

It is an amenable number.

5221921 is a deficient number, since it is larger than the sum of its proper divisors (195359).

5221921 is a wasteful number, since it uses less digits than its factorization.

5221921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its digits is 360, while the sum is 22.

The square root of 5221921 is about 2285.1522925179. The cubic root of 5221921 is about 173.4909262834.

The spelling of 5221921 in words is "five million, two hundred twenty-one thousand, nine hundred twenty-one".