1556222056 has 32 divisors (see below), whose sum is σ = 3101342400. Its totient is φ = 729993600.

The previous prime is 1556222011. The next prime is 1556222077. The reversal of 1556222056 is 6502226551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34045 + ... + 65356.

It is an arithmetic number, because the mean of its divisors is an integer number (96916950).

Almost surely, 2^1556222056 is an apocalyptic number.

It is an amenable number.

1556222056 is a deficient number, since it is larger than the sum of its proper divisors (1545120344).

1556222056 is a wasteful number, since it uses less digits than its factorization.

1556222056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99529 (or 99525 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1556222056 is about 39448.9804177497. The cubic root of 1556222056 is about 1158.8410084739.

The spelling of 1556222056 in words is "one billion, five hundred fifty-six million, two hundred twenty-two thousand, fifty-six".