520426465 has 8 divisors (see below), whose sum is σ = 672551208. Its totient is φ = 384314880.

The previous prime is 520426429. The next prime is 520426477. The reversal of 520426465 is 564624025.

It can be written as a sum of positive squares in 4 ways, for example, as 2954961 + 517471504 = 1719^2 + 22748^2 .

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

It is not a de Polignac number, because 520426465 - 2⁷ = 520426337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520426465.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4003216 + ... + 4003345.

It is an arithmetic number, because the mean of its divisors is an integer number (84068901).

Almost surely, 2^520426465 is an apocalyptic number.

It is an amenable number.

520426465 is a deficient number, since it is larger than the sum of its proper divisors (152124743).

520426465 is a wasteful number, since it uses less digits than its factorization.

520426465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006579.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 520426465 is about 22812.8574492544. The cubic root of 520426465 is about 804.3649248291.

The spelling of 520426465 in words is "five hundred twenty million, four hundred twenty-six thousand, four hundred sixty-five".