520741247 has 16 divisors (see below), whose sum is σ = 577003392. Its totient is φ = 466947840.

The previous prime is 520741231. The next prime is 520741259. The reversal of 520741247 is 742147025.

It is a cyclic number.

It is not a de Polignac number, because 520741247 - 2⁴ = 520741231 is a prime.

It is a super-3 number, since 3×520741247³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520741217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80597 + ... + 86817.

It is an arithmetic number, because the mean of its divisors is an integer number (36062712).

Almost surely, 2^520741247 is an apocalyptic number.

520741247 is a deficient number, since it is larger than the sum of its proper divisors (56262145).

520741247 is a wasteful number, since it uses less digits than its factorization.

520741247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 520741247 is about 22819.7556297170. The cubic root of 520741247 is about 804.5270665753.

The spelling of 520741247 in words is "five hundred twenty million, seven hundred forty-one thousand, two hundred forty-seven".