505550655 has 24 divisors (see below), whose sum is σ = 876844800. Its totient is φ = 269455680.

The previous prime is 505550653. The next prime is 505550657. The reversal of 505550655 is 556055505.

505550655 is a `hidden beast` number, since 50 + 5 + 550 + 6 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (505550653) and next prime (505550657).

It is not a de Polignac number, because 505550655 - 2¹ = 505550653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505550653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102946 + ... + 107744.

It is an arithmetic number, because the mean of its divisors is an integer number (36535200).

Almost surely, 2^505550655 is an apocalyptic number.

505550655 is a deficient number, since it is larger than the sum of its proper divisors (371294145).

505550655 is a wasteful number, since it uses less digits than its factorization.

505550655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7151 (or 7148 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 505550655 is about 22484.4536291189. The cubic root of 505550655 is about 796.6267627249.

The spelling of 505550655 in words is "five hundred five million, five hundred fifty thousand, six hundred fifty-five".