65265121 has 2 divisors, whose sum is σ = 65265122. Its totient is φ = 65265120.

The previous prime is 65265113. The next prime is 65265127. The reversal of 65265121 is 12156256.

65265121 is nontrivially palindromic in base 6.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 15492096 = 7055^2 + 3936^2 .

It is a cyclic number.

It is not a de Polignac number, because 65265121 - 2³ = 65265113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65265121.

It is not a weakly prime, because it can be changed into another prime (65265127) 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, 32632560 + 32632561.

It is an arithmetic number, because the mean of its divisors is an integer number (32632561).

Almost surely, 2^65265121 is an apocalyptic number.

It is an amenable number.

65265121 is a deficient number, since it is larger than the sum of its proper divisors (1).

65265121 is an equidigital number, since it uses as much as digits as its factorization.

65265121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 65265121 is about 8078.6831228858. The cubic root of 65265121 is about 402.6184901203.

The spelling of 65265121 in words is "sixty-five million, two hundred sixty-five thousand, one hundred twenty-one".