2005549056 has 360 divisors, whose sum is σ = 6951846720. Its totient is φ = 544997376.

The previous prime is 2005549019. The next prime is 2005549069. The reversal of 2005549056 is 6509455002.

It is a super-2 number, since 2×2005549056² = 8044454032044982272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2005549056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29933535 + ... + 29933601.

Almost surely, 2^2005549056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2005549056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3475923360).

2005549056 is an abundant number, since it is smaller than the sum of its proper divisors (4946297664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2005549056 is an equidigital number, since it uses as much as digits as its factorization.

2005549056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2005549056 is about 44783.3569085659. The cubic root of 2005549056 is about 1261.0852026432.

The spelling of 2005549056 in words is "two billion, five million, five hundred forty-nine thousand, fifty-six".