2561381053 has 16 divisors (see below), whose sum is σ = 3213765504. Its totient is φ = 1983159360.

The previous prime is 2561381029. The next prime is 2561381153. The reversal of 2561381053 is 3501831652.

It is not a de Polignac number, because 2561381053 - 2¹⁷ = 2561249981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561381023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93850 + ... + 118027.

It is an arithmetic number, because the mean of its divisors is an integer number (200860344).

Almost surely, 2^2561381053 is an apocalyptic number.

It is an amenable number.

2561381053 is a deficient number, since it is larger than the sum of its proper divisors (652384451).

2561381053 is a wasteful number, since it uses less digits than its factorization.

2561381053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212052.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2561381053 is about 50610.0884508217. The cubic root of 2561381053 is about 1368.2267097237.

The spelling of 2561381053 in words is "two billion, five hundred sixty-one million, three hundred eighty-one thousand, fifty-three".