512157139 has 8 divisors (see below), whose sum is σ = 570573360. Its totient is φ = 456458016.

The previous prime is 512157131. The next prime is 512157143. The reversal of 512157139 is 931751215.

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 512157139 - 2³ = 512157131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512157131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678877 + ... + 679630.

It is an arithmetic number, because the mean of its divisors is an integer number (71321670).

Almost surely, 2^512157139 is an apocalyptic number.

512157139 is a deficient number, since it is larger than the sum of its proper divisors (58416221).

512157139 is a wasteful number, since it uses less digits than its factorization.

512157139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358549.

The product of its digits is 9450, while the sum is 34.

The square root of 512157139 is about 22630.8890457269. The cubic root of 512157139 is about 800.0818348577.

The spelling of 512157139 in words is "five hundred twelve million, one hundred fifty-seven thousand, one hundred thirty-nine".