5115561508 has 6 divisors (see below), whose sum is σ = 8952232646. Its totient is φ = 2557780752.

The previous prime is 5115561469. The next prime is 5115561509. The reversal of 5115561508 is 8051655115.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5056916544 + 58644964 = 71112^2 + 7658^2 .

It is not an unprimeable number, because it can be changed into a prime (5115561509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639445185 + ... + 639445192.

Almost surely, 2^5115561508 is an apocalyptic number.

It is an amenable number.

5115561508 is a deficient number, since it is larger than the sum of its proper divisors (3836671138).

5115561508 is a wasteful number, since it uses less digits than its factorization.

5115561508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278890381 (or 1278890379 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 37.

The square root of 5115561508 is about 71523.1536497098. The cubic root of 5115561508 is about 1723.0495642301.

The spelling of 5115561508 in words is "five billion, one hundred fifteen million, five hundred sixty-one thousand, five hundred eight".