520796377 has 8 divisors (see below), whose sum is σ = 551630952. Its totient is φ = 489984000.

The previous prime is 520796371. The next prime is 520796387. The reversal of 520796377 is 773697025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 196112016 + 324684361 = 14004^2 + 18019^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 520796377 - 2²³ = 512407769 is a prime.

It is a super-2 number, since 2×520796377² = 542457732592652258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520796371) 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, 86877 + ... + 92677.

It is an arithmetic number, because the mean of its divisors is an integer number (68953869).

Almost surely, 2^520796377 is an apocalyptic number.

It is an amenable number.

520796377 is a deficient number, since it is larger than the sum of its proper divisors (30834575).

520796377 is a wasteful number, since it uses less digits than its factorization.

520796377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11099.

The product of its (nonzero) digits is 555660, while the sum is 46.

The square root of 520796377 is about 22820.9635423222. The cubic root of 520796377 is about 804.5554568826. Note that the first 3 decimals are identical.

The spelling of 520796377 in words is "five hundred twenty million, seven hundred ninety-six thousand, three hundred seventy-seven".