515006139 has 8 divisors (see below), whose sum is σ = 686780752. Its totient is φ = 343284480.

The previous prime is 515006117. The next prime is 515006147. The reversal of 515006139 is 931600515.

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

It is not a de Polignac number, because 515006139 - 2²⁴ = 498228923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515006159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26499 + ... + 41619.

It is an arithmetic number, because the mean of its divisors is an integer number (85847594).

Almost surely, 2^515006139 is an apocalyptic number.

515006139 is a deficient number, since it is larger than the sum of its proper divisors (171774613).

515006139 is a wasteful number, since it uses less digits than its factorization.

515006139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26477.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 515006139 is about 22693.7466937480. The cubic root of 515006139 is about 801.5626430917.

The spelling of 515006139 in words is "five hundred fifteen million, six thousand, one hundred thirty-nine".