556252138 has 32 divisors (see below), whose sum is σ = 953433936. Its totient is φ = 241118208.

The previous prime is 556252129. The next prime is 556252153. The reversal of 556252138 is 831252655.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 77211369 + 479040769 = 8787^2 + 21887^2 .

It is a junction number, because it is equal to n+sod(n) for n = 556252097 and 556252106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269920 + ... + 271972.

Almost surely, 2^556252138 is an apocalyptic number.

556252138 is a deficient number, since it is larger than the sum of its proper divisors (397181798).

556252138 is a wasteful number, since it uses less digits than its factorization.

556252138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698.

The product of its digits is 72000, while the sum is 37.

The square root of 556252138 is about 23584.9981556073. The cubic root of 556252138 is about 822.4141319497.

The spelling of 556252138 in words is "five hundred fifty-six million, two hundred fifty-two thousand, one hundred thirty-eight".