5548121 has 4 divisors (see below), whose sum is σ = 5557200. Its totient is φ = 5539044.

The previous prime is 5548099. The next prime is 5548141. The reversal of 5548121 is 1218455.

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 a de Polignac number, because none of the positive numbers 2^k-5548121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5548141) 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, 3551 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (1389300).

Almost surely, 2^5548121 is an apocalyptic number.

It is an amenable number.

5548121 is a deficient number, since it is larger than the sum of its proper divisors (9079).

5548121 is an equidigital number, since it uses as much as digits as its factorization.

5548121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078.

The product of its digits is 1600, while the sum is 26.

The square root of 5548121 is about 2355.4449685781. Note that the first 3 decimals coincide. The cubic root of 5548121 is about 177.0307223210.

It can be divided in two parts, 55481 and 21, that multiplied together give a triangular number (1165101 = T₁₅₂₆).

The spelling of 5548121 in words is "five million, five hundred forty-eight thousand, one hundred twenty-one".