521480511 has 10 divisors (see below), whose sum is σ = 779001872. Its totient is φ = 347653620.

The previous prime is 521480507. The next prime is 521480513. The reversal of 521480511 is 115084125.

521480511 is a `hidden beast` number, since 5 + 2 + 148 + 0 + 511 = 666.

It is not a de Polignac number, because 521480511 - 2² = 521480507 is a prime.

It is a super-2 number, since 2×521480511² = 543883846705642242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521480513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3218935 + ... + 3219096.

Almost surely, 2^521480511 is an apocalyptic number.

521480511 is a deficient number, since it is larger than the sum of its proper divisors (257521361).

521480511 is an equidigital number, since it uses as much as digits as its factorization.

521480511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438043 (or 6438034 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 521480511 is about 22835.9477797616. The cubic root of 521480511 is about 804.9075989258.

The spelling of 521480511 in words is "five hundred twenty-one million, four hundred eighty thousand, five hundred eleven".