520564451 has 16 divisors (see below), whose sum is σ = 623773440. Its totient is φ = 428836320.

The previous prime is 520564411. The next prime is 520564453. The reversal of 520564451 is 154465025.

It is not a de Polignac number, because 520564451 - 2²² = 516370147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520564453) 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 15 ways as a sum of consecutive naturals, for example, 49340 + ... + 58953.

It is an arithmetic number, because the mean of its divisors is an integer number (38985840).

Almost surely, 2^520564451 is an apocalyptic number.

520564451 is a deficient number, since it is larger than the sum of its proper divisors (103208989).

520564451 is a wasteful number, since it uses less digits than its factorization.

520564451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108346.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 520564451 is about 22815.8815521119. The cubic root of 520564451 is about 804.4360083847.

The spelling of 520564451 in words is "five hundred twenty million, five hundred sixty-four thousand, four hundred fifty-one".