2561086 has 24 divisors (see below), whose sum is σ = 4452840. Its totient is φ = 1100880.

The previous prime is 2561071. The next prime is 2561089. The reversal of 2561086 is 6801652.

2561086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2561086² = 13118322998792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4320 + ... + 4876.

It is an arithmetic number, because the mean of its divisors is an integer number (185535).

2^2561086 is an apocalyptic number.

2561086 is a deficient number, since it is larger than the sum of its proper divisors (1891754).

2561086 is a wasteful number, since it uses less digits than its factorization.

2561086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2561086 is about 1600.3393390153. The cubic root of 2561086 is about 136.8174171023.

The spelling of 2561086 in words is "two million, five hundred sixty-one thousand, eighty-six".