2633561 has 8 divisors (see below), whose sum is σ = 3020160. Its totient is φ = 2249568.

The previous prime is 2633557. The next prime is 2633563. The reversal of 2633561 is 1653362.

2633561 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 2633561 - 2² = 2633557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2633561.

It is not an unprimeable number, because it can be changed into a prime (2633563) 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, 2645 + ... + 3501.

It is an arithmetic number, because the mean of its divisors is an integer number (377520).

2^2633561 is an apocalyptic number.

It is an amenable number.

2633561 is a deficient number, since it is larger than the sum of its proper divisors (386599).

2633561 is an equidigital number, since it uses as much as digits as its factorization.

2633561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303.

The product of its digits is 3240, while the sum is 26.

The square root of 2633561 is about 1622.8250059695. The cubic root of 2633561 is about 138.0960089439.

The spelling of 2633561 in words is "two million, six hundred thirty-three thousand, five hundred sixty-one".