520770489 has 4 divisors (see below), whose sum is σ = 694360656. Its totient is φ = 347180324.

The previous prime is 520770473. The next prime is 520770517. The reversal of 520770489 is 984077025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520770489 - 2⁴ = 520770473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520770489.

It is not an unprimeable number, because it can be changed into a prime (520770989) 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, 86795079 + ... + 86795084.

It is an arithmetic number, because the mean of its divisors is an integer number (173590164).

Almost surely, 2^520770489 is an apocalyptic number.

It is an amenable number.

520770489 is a deficient number, since it is larger than the sum of its proper divisors (173590167).

520770489 is a wasteful number, since it uses less digits than its factorization.

520770489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173590166.

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

The square root of 520770489 is about 22820.3963374872. The cubic root of 520770489 is about 804.5421255835.

The spelling of 520770489 in words is "five hundred twenty million, seven hundred seventy thousand, four hundred eighty-nine".