4551121 has 4 divisors (see below), whose sum is σ = 4818852. Its totient is φ = 4283392.

The previous prime is 4551119. The next prime is 4551137. The reversal of 4551121 is 1211554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1782225 + 2768896 = 1335^2 + 1664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4551121 - 2¹ = 4551119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4551101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133840 + ... + 133873.

It is an arithmetic number, because the mean of its divisors is an integer number (1204713).

Almost surely, 2^4551121 is an apocalyptic number.

It is an amenable number.

4551121 is a deficient number, since it is larger than the sum of its proper divisors (267731).

4551121 is a wasteful number, since it uses less digits than its factorization.

4551121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267730.

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

The square root of 4551121 is about 2133.3356510404. The cubic root of 4551121 is about 165.7191870118.

Adding to 4551121 its reverse (1211554), we get a palindrome (5762675).

The spelling of 4551121 in words is "four million, five hundred fifty-one thousand, one hundred twenty-one".