520147577 has 4 divisors (see below), whose sum is σ = 520314276. Its totient is φ = 519980880.

The previous prime is 520147547. The next prime is 520147597. The reversal of 520147577 is 775741025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 214212496 + 305935081 = 14636^2 + 17491^2 .

It is a cyclic number.

It is not a de Polignac number, because 520147577 - 2⁶ = 520147513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520147577.

It is not an unprimeable number, because it can be changed into a prime (520147547) 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, 78578 + ... + 84939.

It is an arithmetic number, because the mean of its divisors is an integer number (130078569).

Almost surely, 2^520147577 is an apocalyptic number.

It is an amenable number.

520147577 is a deficient number, since it is larger than the sum of its proper divisors (166699).

520147577 is a wasteful number, since it uses less digits than its factorization.

520147577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166698.

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 520147577 is about 22806.7441122138. The cubic root of 520147577 is about 804.2212171693.

The spelling of 520147577 in words is "five hundred twenty million, one hundred forty-seven thousand, five hundred seventy-seven".