520455000 has 320 divisors, whose sum is σ = 1865777760. Its totient is φ = 119808000.

The previous prime is 520454969. The next prime is 520455007. The reversal of 520455000 is 554025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520455007) 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 79 ways as a sum of consecutive naturals, for example, 3314922 + ... + 3315078.

Almost surely, 2^520455000 is an apocalyptic number.

520455000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520455000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932888880).

520455000 is an abundant number, since it is smaller than the sum of its proper divisors (1345322760).

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

520455000 is a wasteful number, since it uses less digits than its factorization.

520455000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 520455000 is about 22813.4828555396. The cubic root of 520455000 is about 804.3796256788.

The spelling of 520455000 in words is "five hundred twenty million, four hundred fifty-five thousand".