520072727 has 4 divisors (see below), whose sum is σ = 520756896. Its totient is φ = 519388560.

The previous prime is 520072699. The next prime is 520072733. The reversal of 520072727 is 727270025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520072727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520072693 and 520072702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520072627) 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, 340943 + ... + 342464.

It is an arithmetic number, because the mean of its divisors is an integer number (130189224).

Almost surely, 2^520072727 is an apocalyptic number.

520072727 is a deficient number, since it is larger than the sum of its proper divisors (684169).

520072727 is an equidigital number, since it uses as much as digits as its factorization.

520072727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684168.

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 520072727 is about 22805.1030911943. The cubic root of 520072727 is about 804.1826391141.

The spelling of 520072727 in words is "five hundred twenty million, seventy-two thousand, seven hundred twenty-seven".