65255563 has 2 divisors, whose sum is σ = 65255564. Its totient is φ = 65255562.

The previous prime is 65255551. The next prime is 65255569. The reversal of 65255563 is 36555256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65255563 - 2²¹ = 63158411 is a prime.

It is not a weakly prime, because it can be changed into another prime (65255569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32627781 + 32627782.

It is an arithmetic number, because the mean of its divisors is an integer number (32627782).

Almost surely, 2^65255563 is an apocalyptic number.

65255563 is a deficient number, since it is larger than the sum of its proper divisors (1).

65255563 is an equidigital number, since it uses as much as digits as its factorization.

65255563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 37.

The square root of 65255563 is about 8078.0915444181. The cubic root of 65255563 is about 402.5988348264.

The spelling of 65255563 in words is "sixty-five million, two hundred fifty-five thousand, five hundred sixty-three".