5548421 has 2 divisors, whose sum is σ = 5548422. Its totient is φ = 5548420.

The previous prime is 5548379. The next prime is 5548423. The reversal of 5548421 is 1248455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5522500 + 25921 = 2350^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 5548421 - 2¹⁰ = 5547397 is a prime.

It is a Sophie Germain prime.

Together with 5548423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5548423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2774210 + 2774211.

It is an arithmetic number, because the mean of its divisors is an integer number (2774211).

Almost surely, 2^5548421 is an apocalyptic number.

It is an amenable number.

5548421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5548421 is an equidigital number, since it uses as much as digits as its factorization.

5548421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6400, while the sum is 29.

The square root of 5548421 is about 2355.5086499523. The cubic root of 5548421 is about 177.0339130865.

The spelling of 5548421 in words is "five million, five hundred forty-eight thousand, four hundred twenty-one".