65512273 has 2 divisors, whose sum is σ = 65512274. Its totient is φ = 65512272.

The previous prime is 65512267. The next prime is 65512283. The reversal of 65512273 is 37221556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63473089 + 2039184 = 7967^2 + 1428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65512273 is a prime.

It is not a weakly prime, because it can be changed into another prime (65512253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32756136 + 32756137.

It is an arithmetic number, because the mean of its divisors is an integer number (32756137).

Almost surely, 2^65512273 is an apocalyptic number.

It is an amenable number.

65512273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65512273 is an equidigital number, since it uses as much as digits as its factorization.

65512273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 65512273 is about 8093.9652210767. The cubic root of 65512273 is about 403.1260742555.

The spelling of 65512273 in words is "sixty-five million, five hundred twelve thousand, two hundred seventy-three".