515216140 has 24 divisors (see below), whose sum is σ = 1090478592. Its totient is φ = 204462720.

The previous prime is 515216111. The next prime is 515216159. The reversal of 515216140 is 41612515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98881 + ... + 103960.

It is an arithmetic number, because the mean of its divisors is an integer number (45436608).

Almost surely, 2^515216140 is an apocalyptic number.

It is an amenable number.

515216140 is an abundant number, since it is smaller than the sum of its proper divisors (575262452).

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

515216140 is a wasteful number, since it uses less digits than its factorization.

515216140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202977 (or 202975 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 515216140 is about 22698.3730694515. The cubic root of 515216140 is about 801.6715777687.

Adding to 515216140 its reverse (41612515), we get a palindrome (556828655).

The spelling of 515216140 in words is "five hundred fifteen million, two hundred sixteen thousand, one hundred forty".