65545541 has 2 divisors, whose sum is σ = 65545542. Its totient is φ = 65545540.

The previous prime is 65545507. The next prime is 65545549. The reversal of 65545541 is 14554556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59737441 + 5808100 = 7729^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 65545541 - 2⁶ = 65545477 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65545549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32772770 + 32772771.

It is an arithmetic number, because the mean of its divisors is an integer number (32772771).

Almost surely, 2^65545541 is an apocalyptic number.

It is an amenable number.

65545541 is a deficient number, since it is larger than the sum of its proper divisors (1).

65545541 is an equidigital number, since it uses as much as digits as its factorization.

65545541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60000, while the sum is 35.

The square root of 65545541 is about 8096.0200716154. The cubic root of 65545541 is about 403.1943002949.

The spelling of 65545541 in words is "sixty-five million, five hundred forty-five thousand, five hundred forty-one".