506071138 has 4 divisors (see below), whose sum is σ = 759106710. Its totient is φ = 253035568.

The previous prime is 506071103. The next prime is 506071157. The reversal of 506071138 is 831170605.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 326055249 + 180015889 = 18057^2 + 13417^2 .

It is a super-2 number, since 2×506071138² = 512215993433230088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126517783 + ... + 126517786.

Almost surely, 2^506071138 is an apocalyptic number.

506071138 is a deficient number, since it is larger than the sum of its proper divisors (253035572).

506071138 is a wasteful number, since it uses less digits than its factorization.

506071138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253035571.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 506071138 is about 22496.0249377529. The cubic root of 506071138 is about 796.9000544792.

The spelling of 506071138 in words is "five hundred six million, seventy-one thousand, one hundred thirty-eight".