520773877 has 8 divisors (see below), whose sum is σ = 566387640. Its totient is φ = 475953600.

The previous prime is 520773859. The next prime is 520773931. The reversal of 520773877 is 778377025.

It can be written as a sum of positive squares in 4 ways, for example, as 158785201 + 361988676 = 12601^2 + 19026^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520773877 is a prime.

It is a super-2 number, since 2×520773877² = 542410861931222258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520773577) 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, 197002 + ... + 199627.

It is an arithmetic number, because the mean of its divisors is an integer number (70798455).

Almost surely, 2^520773877 is an apocalyptic number.

It is an amenable number.

520773877 is a deficient number, since it is larger than the sum of its proper divisors (45613763).

520773877 is a wasteful number, since it uses less digits than its factorization.

520773877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396743.

The product of its (nonzero) digits is 576240, while the sum is 46.

The square root of 520773877 is about 22820.4705692061. The cubic root of 520773877 is about 804.5438702950.

The spelling of 520773877 in words is "five hundred twenty million, seven hundred seventy-three thousand, eight hundred seventy-seven".