2056556558 has 48 divisors (see below), whose sum is σ = 3680727120. Its totient is φ = 859009536.

The previous prime is 2056556543. The next prime is 2056556563. The reversal of 2056556558 is 8556556502.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 635288 + ... + 638516.

It is an arithmetic number, because the mean of its divisors is an integer number (76681815).

Almost surely, 2^2056556558 is an apocalyptic number.

2056556558 is a deficient number, since it is larger than the sum of its proper divisors (1624170562).

2056556558 is a wasteful number, since it uses less digits than its factorization.

2056556558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 47.

The square root of 2056556558 is about 45349.2729599935. The cubic root of 2056556558 is about 1271.6869635493.

The spelling of 2056556558 in words is "two billion, fifty-six million, five hundred fifty-six thousand, five hundred fifty-eight".