520265947 has 2 divisors, whose sum is σ = 520265948. Its totient is φ = 520265946.

The previous prime is 520265939. The next prime is 520265959. The reversal of 520265947 is 749562025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520265947 - 2³ = 520265939 is a prime.

It is not a weakly prime, because it can be changed into another prime (520265927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260132973 + 260132974.

It is an arithmetic number, because the mean of its divisors is an integer number (260132974).

Almost surely, 2^520265947 is an apocalyptic number.

520265947 is a deficient number, since it is larger than the sum of its proper divisors (1).

520265947 is an equidigital number, since it uses as much as digits as its factorization.

520265947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 520265947 is about 22809.3390303183. The cubic root of 520265947 is about 804.2822180912.

The spelling of 520265947 in words is "five hundred twenty million, two hundred sixty-five thousand, nine hundred forty-seven".