515130000 has 400 divisors, whose sum is σ = 2082533376. Its totient is φ = 106560000.

The previous prime is 515129983. The next prime is 515130013. The reversal of 515130000 is 31515.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2309889 + ... + 2310111.

Almost surely, 2^515130000 is an apocalyptic number.

515130000 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 515130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1041266688).

515130000 is an abundant number, since it is smaller than the sum of its proper divisors (1567403376).

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

515130000 is a wasteful number, since it uses less digits than its factorization.

515130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 515130000 is about 22696.4754973101. The cubic root of 515130000 is about 801.6268975959.

Adding to 515130000 its reverse (31515), we get a palindrome (515161515).

The spelling of 515130000 in words is "five hundred fifteen million, one hundred thirty thousand".