520413451 has 8 divisors (see below), whose sum is σ = 533456784. Its totient is φ = 507386880.

The previous prime is 520413449. The next prime is 520413493. The reversal of 520413451 is 154314025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520413451 - 2¹ = 520413449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520423451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78955 + ... + 85291.

It is an arithmetic number, because the mean of its divisors is an integer number (66682098).

Almost surely, 2^520413451 is an apocalyptic number.

520413451 is a deficient number, since it is larger than the sum of its proper divisors (13043333).

520413451 is a wasteful number, since it uses less digits than its factorization.

520413451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 520413451 is about 22812.5722135843. The cubic root of 520413451 is about 804.3582200123.

Adding to 520413451 its reverse (154314025), we get a palindrome (674727476).

The spelling of 520413451 in words is "five hundred twenty million, four hundred thirteen thousand, four hundred fifty-one".