556063561 has 3 divisors (see below), whose sum is σ = 556087143. Its totient is φ = 556039980.

The previous prime is 556063559. The next prime is 556063567. The reversal of 556063561 is 165360655.

It is a happy number.

The square root of 556063561 is 23581.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 152053561 + 404010000 = 12331^2 + 20100^2 .

It is not a de Polignac number, because 556063561 - 2¹ = 556063559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556063561.

It is not an unprimeable number, because it can be changed into a prime (556063567) 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 in 2 ways as a sum of consecutive naturals, for example, 11791 + ... + 35371.

It is an arithmetic number, because the mean of its divisors is an integer number (185362381).

Almost surely, 2^556063561 is an apocalyptic number.

556063561 is the 23581-st square number.

556063561 is the 11791-st centered octagonal number.

It is an amenable number.

556063561 is a deficient number, since it is larger than the sum of its proper divisors (23582).

556063561 is an frugal number, since it uses more digits than its factorization.

556063561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47162 (or 23581 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 37.

The cubic root of 556063561 is about 822.3211849399.

The spelling of 556063561 in words is "five hundred fifty-six million, sixty-three thousand, five hundred sixty-one".