2056621550 has 24 divisors (see below), whose sum is σ = 3846467352. Its totient is φ = 818100000.

The previous prime is 2056621513. The next prime is 2056621591. The reversal of 2056621550 is 551266502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104576 + ... + 122675.

It is an arithmetic number, because the mean of its divisors is an integer number (160269473).

Almost surely, 2^2056621550 is an apocalyptic number.

2056621550 is a deficient number, since it is larger than the sum of its proper divisors (1789845802).

2056621550 is a wasteful number, since it uses less digits than its factorization.

2056621550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227444 (or 227439 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2056621550 is about 45349.9895259084. The cubic root of 2056621550 is about 1271.7003595028.

The spelling of 2056621550 in words is "two billion, fifty-six million, six hundred twenty-one thousand, five hundred fifty".