2055561144 has 256 divisors, whose sum is σ = 6617210880. Its totient is φ = 517570560.

The previous prime is 2055561133. The next prime is 2055561163. The reversal of 2055561144 is 4411655502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6567132 + ... + 6567444.

It is an arithmetic number, because the mean of its divisors is an integer number (25848480).

Almost surely, 2^2055561144 is an apocalyptic number.

2055561144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055561144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3308605440).

2055561144 is an abundant number, since it is smaller than the sum of its proper divisors (4561649736).

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

2055561144 is a wasteful number, since it uses less digits than its factorization.

2055561144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 2055561144 is about 45338.2966596673. The cubic root of 2055561144 is about 1271.4817565671.

The spelling of 2055561144 in words is "two billion, fifty-five million, five hundred sixty-one thousand, one hundred forty-four".