4519121 has 2 divisors, whose sum is σ = 4519122. Its totient is φ = 4519120.

The previous prime is 4519117. The next prime is 4519139. The reversal of 4519121 is 1219154.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4326400 + 192721 = 2080^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 4519121 - 2² = 4519117 is a prime.

It is a super-2 number, since 2×4519121² = 40844909225282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4519421) 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 as a sum of consecutive naturals, namely, 2259560 + 2259561.

It is an arithmetic number, because the mean of its divisors is an integer number (2259561).

Almost surely, 2^4519121 is an apocalyptic number.

It is an amenable number.

4519121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4519121 is an equidigital number, since it uses as much as digits as its factorization.

4519121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 23.

The square root of 4519121 is about 2125.8224290848. The cubic root of 4519121 is about 165.3298696197.

The spelling of 4519121 in words is "four million, five hundred nineteen thousand, one hundred twenty-one".