515275640 has 64 divisors (see below), whose sum is σ = 1277912160. Its totient is φ = 185425920.

The previous prime is 515275637. The next prime is 515275667. The reversal of 515275640 is 46572515.

It is a self number, because there is not a number n which added to its sum of digits gives 515275640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36644 + ... + 48716.

Almost surely, 2^515275640 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 515275640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638956080).

515275640 is an abundant number, since it is smaller than the sum of its proper divisors (762636520).

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

515275640 is a wasteful number, since it uses less digits than its factorization.

515275640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12192 (or 12188 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 515275640 is about 22699.6836982369. The cubic root of 515275640 is about 801.7024370652.

The spelling of 515275640 in words is "five hundred fifteen million, two hundred seventy-five thousand, six hundred forty".