520342539 has 8 divisors (see below), whose sum is σ = 693982272. Its totient is φ = 346798920.

The previous prime is 520342523. The next prime is 520342541. The reversal of 520342539 is 935243025.

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

It is not a de Polignac number, because 520342539 - 2⁴ = 520342523 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (520342519) 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, 10269 + ... + 33854.

It is an arithmetic number, because the mean of its divisors is an integer number (86747784).

Almost surely, 2^520342539 is an apocalyptic number.

520342539 is a deficient number, since it is larger than the sum of its proper divisors (173639733).

520342539 is a wasteful number, since it uses less digits than its factorization.

520342539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48057.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 520342539 is about 22811.0179299390. The cubic root of 520342539 is about 804.3216841638.

The spelling of 520342539 in words is "five hundred twenty million, three hundred forty-two thousand, five hundred thirty-nine".