65510055 has 48 divisors (see below), whose sum is σ = 123492096. Its totient is φ = 31933440.

The previous prime is 65510033. The next prime is 65510059. The reversal of 65510055 is 55001556.

65510055 is a `hidden beast` number, since 655 + 1 + 0 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 65510055 - 2⁸ = 65509799 is a prime.

It is a super-2 number, since 2×65510055² = 8583134612206050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65510059) 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 in 47 ways as a sum of consecutive naturals, for example, 65610 + ... + 66600.

It is an arithmetic number, because the mean of its divisors is an integer number (2572752).

Almost surely, 2^65510055 is an apocalyptic number.

65510055 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65510055 is a deficient number, since it is larger than the sum of its proper divisors (57982041).

65510055 is a wasteful number, since it uses less digits than its factorization.

65510055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 65510055 is about 8093.8282042554. The cubic root of 65510055 is about 403.1215247582.

The spelling of 65510055 in words is "sixty-five million, five hundred ten thousand, fifty-five".