506645055 has 36 divisors (see below), whose sum is σ = 1021566312. Its totient is φ = 231608160.

The previous prime is 506645023. The next prime is 506645057. The reversal of 506645055 is 550546605.

It is a happy number.

506645055 is a `hidden beast` number, since 5 + 0 + 6 + 645 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 506645055 - 2⁵ = 506645023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506645057) 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 35 ways as a sum of consecutive naturals, for example, 112681 + ... + 117090.

It is an arithmetic number, because the mean of its divisors is an integer number (28376842).

Almost surely, 2^506645055 is an apocalyptic number.

506645055 is an abundant number, since it is smaller than the sum of its proper divisors (514921257).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

506645055 is a wasteful number, since it uses less digits than its factorization.

506645055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229796 (or 229786 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 506645055 is about 22508.7772879826. Note that the first 3 decimals coincide. The cubic root of 506645055 is about 797.2011858639.

The spelling of 506645055 in words is "five hundred six million, six hundred forty-five thousand, fifty-five".