63565055 has 4 divisors (see below), whose sum is σ = 76278072. Its totient is φ = 50852040.

The previous prime is 63565049. The next prime is 63565069. The reversal of 63565055 is 55056536.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63565055 - 2⁸ = 63564799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6356501 + ... + 6356510.

It is an arithmetic number, because the mean of its divisors is an integer number (19069518).

Almost surely, 2^63565055 is an apocalyptic number.

63565055 is a deficient number, since it is larger than the sum of its proper divisors (12713017).

63565055 is a wasteful number, since it uses less digits than its factorization.

63565055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12713016.

The product of its (nonzero) digits is 67500, while the sum is 35.

The square root of 63565055 is about 7972.7695940620. The cubic root of 63565055 is about 399.0918040944.

It can be divided in two parts, 6356 and 5055, that added together give a palindrome (11411).

The spelling of 63565055 in words is "sixty-three million, five hundred sixty-five thousand, fifty-five".