515222340 has 24 divisors (see below), whose sum is σ = 1442622720. Its totient is φ = 137392608.

The previous prime is 515222329. The next prime is 515222453. The reversal of 515222340 is 43222515.

It is a self number, because there is not a number n which added to its sum of digits gives 515222340.

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, 4293460 + ... + 4293579.

It is an arithmetic number, because the mean of its divisors is an integer number (60109280).

Almost surely, 2^515222340 is an apocalyptic number.

It is an amenable number.

515222340 is an abundant number, since it is smaller than the sum of its proper divisors (927400380).

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

515222340 is a wasteful number, since it uses less digits than its factorization.

515222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587051 (or 8587049 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 515222340 is about 22698.5096427056. The cubic root of 515222340 is about 801.6747934702.

Adding to 515222340 its reverse (43222515), we get a palindrome (558444855).

The spelling of 515222340 in words is "five hundred fifteen million, two hundred twenty-two thousand, three hundred forty".