4549915121 has 2 divisors, whose sum is σ = 4549915122. Its totient is φ = 4549915120.

The previous prime is 4549915093. The next prime is 4549915129. The reversal of 4549915121 is 1215199454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2617345600 + 1932569521 = 51160^2 + 43961^2 .

It is a cyclic number.

It is not a de Polignac number, because 4549915121 - 2⁶ = 4549915057 is a prime.

It is not a weakly prime, because it can be changed into another prime (4549915129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2274957560 + 2274957561.

It is an arithmetic number, because the mean of its divisors is an integer number (2274957561).

Almost surely, 2^4549915121 is an apocalyptic number.

It is an amenable number.

4549915121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4549915121 is an equidigital number, since it uses as much as digits as its factorization.

4549915121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 41.

The square root of 4549915121 is about 67453.0586482185. The cubic root of 4549915121 is about 1657.0454923058.

The spelling of 4549915121 in words is "four billion, five hundred forty-nine million, nine hundred fifteen thousand, one hundred twenty-one".