65506229 has 2 divisors, whose sum is σ = 65506230. Its totient is φ = 65506228.

The previous prime is 65506201. The next prime is 65506237. The reversal of 65506229 is 92260556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51051025 + 14455204 = 7145^2 + 3802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65506229 is a prime.

It is a super-3 number, since 3×65506229³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65506279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32753114 + 32753115.

It is an arithmetic number, because the mean of its divisors is an integer number (32753115).

Almost surely, 2^65506229 is an apocalyptic number.

It is an amenable number.

65506229 is a deficient number, since it is larger than the sum of its proper divisors (1).

65506229 is an equidigital number, since it uses as much as digits as its factorization.

65506229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 65506229 is about 8093.5918478757. The cubic root of 65506229 is about 403.1136767366.

The spelling of 65506229 in words is "sixty-five million, five hundred six thousand, two hundred twenty-nine".