65573149 has 2 divisors, whose sum is σ = 65573150. Its totient is φ = 65573148.

The previous prime is 65573141. The next prime is 65573171. The reversal of 65573149 is 94137556.

65573149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45832900 + 19740249 = 6770^2 + 4443^2 .

It is a cyclic number.

It is not a de Polignac number, because 65573149 - 2³ = 65573141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65573141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32786574 + 32786575.

It is an arithmetic number, because the mean of its divisors is an integer number (32786575).

Almost surely, 2^65573149 is an apocalyptic number.

It is an amenable number.

65573149 is a deficient number, since it is larger than the sum of its proper divisors (1).

65573149 is an equidigital number, since it uses as much as digits as its factorization.

65573149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 65573149 is about 8097.7249274102. The cubic root of 65573149 is about 403.2509012758.

The spelling of 65573149 in words is "sixty-five million, five hundred seventy-three thousand, one hundred forty-nine".