520321134 has 16 divisors (see below), whose sum is σ = 1085887872. Its totient is φ = 165899448.

The previous prime is 520321133. The next prime is 520321163. The reversal of 520321134 is 431123025.

It is a self number, because there is not a number n which added to its sum of digits gives 520321134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520321133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1885084 + ... + 1885359.

It is an arithmetic number, because the mean of its divisors is an integer number (67867992).

Almost surely, 2^520321134 is an apocalyptic number.

520321134 is an abundant number, since it is smaller than the sum of its proper divisors (565566738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520321134 is a wasteful number, since it uses less digits than its factorization.

520321134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770471.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 520321134 is about 22810.5487439474. The cubic root of 520321134 is about 804.3106550561.

Adding to 520321134 its reverse (431123025), we get a palindrome (951444159).

The spelling of 520321134 in words is "five hundred twenty million, three hundred twenty-one thousand, one hundred thirty-four".