65441261 has 2 divisors, whose sum is σ = 65441262. Its totient is φ = 65441260.

The previous prime is 65441251. The next prime is 65441269. The reversal of 65441261 is 16214456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57851236 + 7590025 = 7606^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 65441261 - 2²² = 61246957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65441269) 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, 32720630 + 32720631.

It is an arithmetic number, because the mean of its divisors is an integer number (32720631).

Almost surely, 2^65441261 is an apocalyptic number.

It is an amenable number.

65441261 is a deficient number, since it is larger than the sum of its proper divisors (1).

65441261 is an equidigital number, since it uses as much as digits as its factorization.

65441261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 65441261 is about 8089.5773066335. The cubic root of 65441261 is about 402.9803654845.

The spelling of 65441261 in words is "sixty-five million, four hundred forty-one thousand, two hundred sixty-one".