505258906 has 16 divisors (see below), whose sum is σ = 801129600. Its totient is φ = 238327488.

The previous prime is 505258903. The next prime is 505258951. The reversal of 505258906 is 609852505.

It is not an unprimeable number, because it can be changed into a prime (505258903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18735 + ... + 36898.

It is an arithmetic number, because the mean of its divisors is an integer number (50070600).

Almost surely, 2^505258906 is an apocalyptic number.

505258906 is a deficient number, since it is larger than the sum of its proper divisors (295870694).

505258906 is a wasteful number, since it uses less digits than its factorization.

505258906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55893.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 505258906 is about 22477.9648989850. The cubic root of 505258906 is about 796.4734910519.

The spelling of 505258906 in words is "five hundred five million, two hundred fifty-eight thousand, nine hundred six".