506405513 has 8 divisors (see below), whose sum is σ = 538394688. Its totient is φ = 475247344.

The previous prime is 506405509. The next prime is 506405533. The reversal of 506405513 is 315504605.

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

It is not a de Polignac number, because 506405513 - 2² = 506405509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506405533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206495 + ... + 208932.

It is an arithmetic number, because the mean of its divisors is an integer number (67299336).

Almost surely, 2^506405513 is an apocalyptic number.

506405513 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

506405513 is a deficient number, since it is larger than the sum of its proper divisors (31989175).

506405513 is a wasteful number, since it uses less digits than its factorization.

506405513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415503.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 506405513 is about 22503.4555790883. The cubic root of 506405513 is about 797.0755270368.

The spelling of 506405513 in words is "five hundred six million, four hundred five thousand, five hundred thirteen".