515378852 has 6 divisors (see below), whose sum is σ = 901912998. Its totient is φ = 257689424.

The previous prime is 515378821. The next prime is 515378869. The reversal of 515378852 is 258873515.

It can be written as a sum of positive squares in only one way, i.e., 268763236 + 246615616 = 16394^2 + 15704^2 .

It is a super-2 number, since 2×515378852² = 531230722177675808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64422353 + ... + 64422360.

It is an arithmetic number, because the mean of its divisors is an integer number (150318833).

Almost surely, 2^515378852 is an apocalyptic number.

It is an amenable number.

515378852 is a deficient number, since it is larger than the sum of its proper divisors (386534146).

515378852 is a wasteful number, since it uses less digits than its factorization.

515378852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128844717 (or 128844715 counting only the distinct ones).

The product of its digits is 336000, while the sum is 44.

The square root of 515378852 is about 22701.9570081524. The cubic root of 515378852 is about 801.7559616783.

The spelling of 515378852 in words is "five hundred fifteen million, three hundred seventy-eight thousand, eight hundred fifty-two".