5404921 has 2 divisors, whose sum is σ = 5404922. Its totient is φ = 5404920.

The previous prime is 5404909. The next prime is 5404961. The reversal of 5404921 is 1294045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5290000 + 114921 = 2300^2 + 339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5404921 is a prime.

It is not a weakly prime, because it can be changed into another prime (5404961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2702460 + 2702461.

It is an arithmetic number, because the mean of its divisors is an integer number (2702461).

Almost surely, 2^5404921 is an apocalyptic number.

It is an amenable number.

5404921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5404921 is an equidigital number, since it uses as much as digits as its factorization.

5404921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 5404921 is about 2324.8485972209. The cubic root of 5404921 is about 175.4943410431.

Adding to 5404921 its reverse (1294045), we get a palindrome (6698966).

The spelling of 5404921 in words is "five million, four hundred four thousand, nine hundred twenty-one".