2559651 has 4 divisors (see below), whose sum is σ = 3412872. Its totient is φ = 1706432.

The previous prime is 2559631. The next prime is 2559677. The reversal of 2559651 is 1569552.

2559651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2559651 - 2⁵ = 2559619 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2559611) 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 3 ways as a sum of consecutive naturals, for example, 426606 + ... + 426611.

It is an arithmetic number, because the mean of its divisors is an integer number (853218).

2^2559651 is an apocalyptic number.

2559651 is a deficient number, since it is larger than the sum of its proper divisors (853221).

2559651 is an equidigital number, since it uses as much as digits as its factorization.

2559651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853220.

The product of its digits is 13500, while the sum is 33.

The square root of 2559651 is about 1599.8909337827. The cubic root of 2559651 is about 136.7918589766.

Subtracting from 2559651 its reverse (1569552), we obtain a palindrome (990099).

The spelling of 2559651 in words is "two million, five hundred fifty-nine thousand, six hundred fifty-one".