65449121 has 2 divisors, whose sum is σ = 65449122. Its totient is φ = 65449120.

The previous prime is 65449073. The next prime is 65449141. The reversal of 65449121 is 12194456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 3748096 = 7855^2 + 1936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65449121 is a prime.

It is not a weakly prime, because it can be changed into another prime (65449141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32724560 + 32724561.

It is an arithmetic number, because the mean of its divisors is an integer number (32724561).

Almost surely, 2^65449121 is an apocalyptic number.

It is an amenable number.

65449121 is a deficient number, since it is larger than the sum of its proper divisors (1).

65449121 is an equidigital number, since it uses as much as digits as its factorization.

65449121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 65449121 is about 8090.0631023497. The cubic root of 65449121 is about 402.9964985216.

The spelling of 65449121 in words is "sixty-five million, four hundred forty-nine thousand, one hundred twenty-one".