2602561 has 8 divisors (see below), whose sum is σ = 2830464. Its totient is φ = 2378640.

The previous prime is 2602541. The next prime is 2602571. The reversal of 2602561 is 1652062.

2602561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2602561 - 2²¹ = 505409 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2602511) 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 7 ways as a sum of consecutive naturals, for example, 456 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

2^2602561 is an apocalyptic number.

It is an amenable number.

2602561 is a deficient number, since it is larger than the sum of its proper divisors (227903).

2602561 is a wasteful number, since it uses less digits than its factorization.

2602561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2602561 is about 1613.2454865891. The cubic root of 2602561 is about 137.5520199864.

The spelling of 2602561 in words is "two million, six hundred two thousand, five hundred sixty-one".