2561075 has 24 divisors (see below), whose sum is σ = 3541440. Its totient is φ = 1821600.

The previous prime is 2561071. The next prime is 2561089. The reversal of 2561075 is 5701652.

It is not a de Polignac number, because 2561075 - 2² = 2561071 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 18356 + ... + 18494.

It is an arithmetic number, because the mean of its divisors is an integer number (147560).

2^2561075 is an apocalyptic number.

2561075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2561075 is a deficient number, since it is larger than the sum of its proper divisors (980365).

2561075 is a wasteful number, since it uses less digits than its factorization.

2561075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2561075 is about 1600.3359022405. The cubic root of 2561075 is about 136.8172212227.

It can be divided in two parts, 256 and 1075, that added together give a palindrome (1331).

The spelling of 2561075 in words is "two million, five hundred sixty-one thousand, seventy-five".