505605137 has 8 divisors (see below), whose sum is σ = 519298560. Its totient is φ = 491999760.

The previous prime is 505605131. The next prime is 505605151. The reversal of 505605137 is 731506505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505605137 - 2⁸ = 505604881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505605131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10289 + ... + 33422.

It is an arithmetic number, because the mean of its divisors is an integer number (64912320).

Almost surely, 2^505605137 is an apocalyptic number.

It is an amenable number.

505605137 is a deficient number, since it is larger than the sum of its proper divisors (13693423).

505605137 is a wasteful number, since it uses less digits than its factorization.

505605137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44023.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 505605137 is about 22485.6651447094. The cubic root of 505605137 is about 796.6553785585.

The spelling of 505605137 in words is "five hundred five million, six hundred five thousand, one hundred thirty-seven".