520145300 has 36 divisors (see below), whose sum is σ = 1129781856. Its totient is φ = 207861600.

The previous prime is 520145293. The next prime is 520145309. The reversal of 520145300 is 3541025.

It is a super-2 number, since 2×520145300² = 541102266224180000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520145309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152615 + ... + 155985.

Almost surely, 2^520145300 is an apocalyptic number.

520145300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520145300 is an abundant number, since it is smaller than the sum of its proper divisors (609636556).

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

520145300 is a wasteful number, since it uses less digits than its factorization.

520145300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4928 (or 4921 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 520145300 is about 22806.6941927146. The cubic root of 520145300 is about 804.2200436469.

Adding to 520145300 its reverse (3541025), we get a palindrome (523686325).

The spelling of 520145300 in words is "five hundred twenty million, one hundred forty-five thousand, three hundred".