2561735 has 16 divisors (see below), whose sum is σ = 3428352. Its totient is φ = 1821600.

The previous prime is 2561731. The next prime is 2561737. The reversal of 2561735 is 5371652.

It is not a de Polignac number, because 2561735 - 2² = 2561731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2561698 and 2561707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2090 + ... + 3080.

It is an arithmetic number, because the mean of its divisors is an integer number (214272).

2^2561735 is an apocalyptic number.

2561735 is a deficient number, since it is larger than the sum of its proper divisors (866617).

2561735 is a wasteful number, since it uses less digits than its factorization.

2561735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054.

The product of its digits is 6300, while the sum is 29.

The square root of 2561735 is about 1600.5420956663. The cubic root of 2561735 is about 136.8289730079.

It can be divided in two parts, 25617 and 35, that added together give a palindrome (25652).

The spelling of 2561735 in words is "two million, five hundred sixty-one thousand, seven hundred thirty-five".