520755071 has 4 divisors (see below), whose sum is σ = 520805544. Its totient is φ = 520704600.

The previous prime is 520755061. The next prime is 520755077. The reversal of 520755071 is 170557025.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520755071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520755077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3545 + ... + 32466.

It is an arithmetic number, because the mean of its divisors is an integer number (130201386).

Almost surely, 2^520755071 is an apocalyptic number.

520755071 is a deficient number, since it is larger than the sum of its proper divisors (50473).

520755071 is a wasteful number, since it uses less digits than its factorization.

520755071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50472.

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 520755071 is about 22820.0585231502. The cubic root of 520755071 is about 804.5341857116.

The spelling of 520755071 in words is "five hundred twenty million, seven hundred fifty-five thousand, seventy-one".