506555138 has 8 divisors (see below), whose sum is σ = 760120320. Its totient is φ = 253181700.

The previous prime is 506555129. The next prime is 506555141. The reversal of 506555138 is 831555605.

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

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 41138 + ... + 52013.

It is an arithmetic number, because the mean of its divisors is an integer number (95015040).

Almost surely, 2^506555138 is an apocalyptic number.

506555138 is a deficient number, since it is larger than the sum of its proper divisors (253565182).

506555138 is a wasteful number, since it uses less digits than its factorization.

506555138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95872.

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 506555138 is about 22506.7798229778. The cubic root of 506555138 is about 797.1540218916.

The spelling of 506555138 in words is "five hundred six million, five hundred fifty-five thousand, one hundred thirty-eight".