520251340 has 96 divisors (see below), whose sum is σ = 1339269120. Its totient is φ = 165694464.

The previous prime is 520251313. The next prime is 520251341. The reversal of 520251340 is 43152025.

It is a super-2 number, since 2×520251340² = 541322913543591200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520251341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186637 + ... + 189403.

It is an arithmetic number, because the mean of its divisors is an integer number (13950720).

Almost surely, 2^520251340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520251340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669634560).

520251340 is an abundant number, since it is smaller than the sum of its proper divisors (819017780).

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

520251340 is a wasteful number, since it uses less digits than its factorization.

520251340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520251340 is about 22809.0188302785. The cubic root of 520251340 is about 804.2746910047.

The spelling of 520251340 in words is "five hundred twenty million, two hundred fifty-one thousand, three hundred forty".