2561072 has 20 divisors (see below), whose sum is σ = 5048040. Its totient is φ = 1258368.

The previous prime is 2561071. The next prime is 2561089. The reversal of 2561072 is 2701652.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2561071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413 + ... + 2300.

It is an arithmetic number, because the mean of its divisors is an integer number (252402).

2^2561072 is an apocalyptic number.

It is an amenable number.

2561072 is a deficient number, since it is larger than the sum of its proper divisors (2486968).

2561072 is a wasteful number, since it uses less digits than its factorization.

2561072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2561072 is about 1600.3349649370. The cubic root of 2561072 is about 136.8171678009.

The spelling of 2561072 in words is "two million, five hundred sixty-one thousand, seventy-two".