521063265 has 16 divisors (see below), whose sum is σ = 834375168. Its totient is φ = 277675776.

The previous prime is 521063261. The next prime is 521063303. The reversal of 521063265 is 562360125.

It is not a de Polignac number, because 521063265 - 2² = 521063261 is a prime.

It is a super-2 number, since 2×521063265² = 543013852264920450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521063261) 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, 6064 + ... + 32846.

It is an arithmetic number, because the mean of its divisors is an integer number (52148448).

Almost surely, 2^521063265 is an apocalyptic number.

It is an amenable number.

521063265 is a deficient number, since it is larger than the sum of its proper divisors (313311903).

521063265 is a wasteful number, since it uses less digits than its factorization.

521063265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28088.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 521063265 is about 22826.8102239450. The cubic root of 521063265 is about 804.6928679304.

The spelling of 521063265 in words is "five hundred twenty-one million, sixty-three thousand, two hundred sixty-five".