65555449 has 2 divisors, whose sum is σ = 65555450. Its totient is φ = 65555448.

The previous prime is 65555437. The next prime is 65555467. The reversal of 65555449 is 94455556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51380224 + 14175225 = 7168^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 65555449 - 2²⁵ = 32001017 is a prime.

It is not a weakly prime, because it can be changed into another prime (65555489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32777724 + 32777725.

It is an arithmetic number, because the mean of its divisors is an integer number (32777725).

Almost surely, 2^65555449 is an apocalyptic number.

It is an amenable number.

65555449 is a deficient number, since it is larger than the sum of its proper divisors (1).

65555449 is an equidigital number, since it uses as much as digits as its factorization.

65555449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540000, while the sum is 43.

The square root of 65555449 is about 8096.6319540905. The cubic root of 65555449 is about 403.2146151670.

The spelling of 65555449 in words is "sixty-five million, five hundred fifty-five thousand, four hundred forty-nine".