2548561 has 4 divisors (see below), whose sum is σ = 2659392. Its totient is φ = 2437732.

The previous prime is 2548547. The next prime is 2548571. The reversal of 2548561 is 1658452.

2548561 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2548561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2548501) 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, 55381 + ... + 55426.

It is an arithmetic number, because the mean of its divisors is an integer number (664848).

2^2548561 is an apocalyptic number.

It is an amenable number.

2548561 is a deficient number, since it is larger than the sum of its proper divisors (110831).

2548561 is a wasteful number, since it uses less digits than its factorization.

2548561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110830.

The product of its digits is 9600, while the sum is 31.

The square root of 2548561 is about 1596.4213103063. The cubic root of 2548561 is about 136.5940171746.

The spelling of 2548561 in words is "two million, five hundred forty-eight thousand, five hundred sixty-one".