4539121 has 2 divisors, whose sum is σ = 4539122. Its totient is φ = 4539120.

The previous prime is 4539091. The next prime is 4539131. The reversal of 4539121 is 1219354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3459600 + 1079521 = 1860^2 + 1039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4539121 is a prime.

It is not a weakly prime, because it can be changed into another prime (4539131) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269560 + 2269561.

It is an arithmetic number, because the mean of its divisors is an integer number (2269561).

Almost surely, 2^4539121 is an apocalyptic number.

It is an amenable number.

4539121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539121 is an equidigital number, since it uses as much as digits as its factorization.

4539121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 4539121 is about 2130.5212977110. The cubic root of 4539121 is about 165.5734074976.

The spelling of 4539121 in words is "four million, five hundred thirty-nine thousand, one hundred twenty-one".