2533661 has 8 divisors (see below), whose sum is σ = 2817024. Its totient is φ = 2262960.

The previous prime is 2533651. The next prime is 2533667. The reversal of 2533661 is 1663352.

2533661 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 2533661 - 2¹⁰ = 2532637 is a prime.

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 2533661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533667) 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, 2741 + ... + 3546.

It is an arithmetic number, because the mean of its divisors is an integer number (352128).

2^2533661 is an apocalyptic number.

It is an amenable number.

2533661 is a deficient number, since it is larger than the sum of its proper divisors (283363).

2533661 is a wasteful number, since it uses less digits than its factorization.

2533661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331.

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

The square root of 2533661 is about 1591.7477815282. The cubic root of 2533661 is about 136.3273006353.

The spelling of 2533661 in words is "two million, five hundred thirty-three thousand, six hundred sixty-one".