5550121 has 2 divisors, whose sum is σ = 5550122. Its totient is φ = 5550120.

The previous prime is 5550113. The next prime is 5550133. The reversal of 5550121 is 1210555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5546025 + 4096 = 2355^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550121 - 2³ = 5550113 is a prime.

It is a super-2 number, since 2×5550121² = 61607686229282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5550151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775060 + 2775061.

It is an arithmetic number, because the mean of its divisors is an integer number (2775061).

Almost surely, 2^5550121 is an apocalyptic number.

It is an amenable number.

5550121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550121 is an equidigital number, since it uses as much as digits as its factorization.

5550121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 5550121 is about 2355.8694785578. The cubic root of 5550121 is about 177.0519919189.

Adding to 5550121 its reverse (1210555), we get a palindrome (6760676).

It can be divided in two parts, 5550 and 121, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 5550121 in words is "five million, five hundred fifty thousand, one hundred twenty-one".