513120506 has 8 divisors (see below), whose sum is σ = 769778100. Its totient is φ = 256527808.

The previous prime is 513120497. The next prime is 513120527. The reversal of 513120506 is 605021315.

It can be written as a sum of positive squares in 2 ways, for example, as 511890625 + 1229881 = 22625^2 + 1109^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17900 + ... + 36696.

Almost surely, 2^513120506 is an apocalyptic number.

513120506 is a deficient number, since it is larger than the sum of its proper divisors (256657594).

513120506 is a wasteful number, since it uses less digits than its factorization.

513120506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32448.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 513120506 is about 22652.1633845423. The cubic root of 513120506 is about 800.5831716602.

The spelling of 513120506 in words is "five hundred thirteen million, one hundred twenty thousand, five hundred six".