556521242 has 8 divisors (see below), whose sum is σ = 834885300. Its totient is φ = 278226144.

The previous prime is 556521233. The next prime is 556521289. The reversal of 556521242 is 242125655.

556521242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 554084521 + 2436721 = 23539^2 + 1561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 556521199 and 556521208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14984 + ... + 36572.

Almost surely, 2^556521242 is an apocalyptic number.

556521242 is a deficient number, since it is larger than the sum of its proper divisors (278364058).

556521242 is a wasteful number, since it uses less digits than its factorization.

556521242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34480.

The product of its digits is 24000, while the sum is 32.

The square root of 556521242 is about 23590.7024482104. The cubic root of 556521242 is about 822.5467332395.

Adding to 556521242 its reverse (242125655), we get a palindrome (798646897).

The spelling of 556521242 in words is "five hundred fifty-six million, five hundred twenty-one thousand, two hundred forty-two".