520782279 has 8 divisors (see below), whose sum is σ = 694487040. Its totient is φ = 347132856.

The previous prime is 520782277. The next prime is 520782281. The reversal of 520782279 is 972287025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520782277) and next prime (520782281).

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

It is not a de Polignac number, because 520782279 - 2¹ = 520782277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520782279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520782277) 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, 19834 + ... + 37880.

It is an arithmetic number, because the mean of its divisors is an integer number (86810880).

Almost surely, 2^520782279 is an apocalyptic number.

520782279 is a deficient number, since it is larger than the sum of its proper divisors (173704761).

520782279 is a wasteful number, since it uses less digits than its factorization.

520782279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27669.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 520782279 is about 22820.6546575684. The cubic root of 520782279 is about 804.5481970233.

The spelling of 520782279 in words is "five hundred twenty million, seven hundred eighty-two thousand, two hundred seventy-nine".