515020000 has 120 divisors (see below), whose sum is σ = 1382801112. Its totient is φ = 187200000.

The previous prime is 515019991. The next prime is 515020007. The reversal of 515020000 is 20515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515020007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 218830 + ... + 221170.

Almost surely, 2^515020000 is an apocalyptic number.

515020000 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 515020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691400556).

515020000 is an abundant number, since it is smaller than the sum of its proper divisors (867781112).

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

515020000 is a wasteful number, since it uses less digits than its factorization.

515020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 515020000 is about 22694.0520841916. The cubic root of 515020000 is about 801.5698341776.

Adding to 515020000 its reverse (20515), we get a palindrome (515040515).

The spelling of 515020000 in words is "five hundred fifteen million, twenty thousand".