5541121 has 2 divisors, whose sum is σ = 5541122. Its totient is φ = 5541120.

The previous prime is 5541079. The next prime is 5541127. The reversal of 5541121 is 1211455.

5541121 = 1664² + 1665².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 2768896 = 1665^2 + 1664^2 .

It is a cyclic number.

It is not a de Polignac number, because 5541121 - 2⁷ = 5540993 is a prime.

It is not a weakly prime, because it can be changed into another prime (5541127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770560 + 2770561.

It is an arithmetic number, because the mean of its divisors is an integer number (2770561).

Almost surely, 2^5541121 is an apocalyptic number.

5541121 is the 1665-th centered square number.

It is an amenable number.

5541121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5541121 is an equidigital number, since it uses as much as digits as its factorization.

5541121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200, while the sum is 19.

The square root of 5541121 is about 2353.9585807741. The cubic root of 5541121 is about 176.9562384498.

Adding to 5541121 its reverse (1211455), we get a palindrome (6752576).

The spelling of 5541121 in words is "five million, five hundred forty-one thousand, one hundred twenty-one".