2748561 has 4 divisors (see below), whose sum is σ = 3664752. Its totient is φ = 1832372.

The previous prime is 2748547. The next prime is 2748563. The reversal of 2748561 is 1658472.

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 not a de Polignac number, because 2748561 - 2⁶ = 2748497 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2748563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458091 + ... + 458096.

It is an arithmetic number, because the mean of its divisors is an integer number (916188).

2^2748561 is an apocalyptic number.

It is an amenable number.

2748561 is a deficient number, since it is larger than the sum of its proper divisors (916191).

2748561 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 2748561 = (5148276)₉.

2748561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916190.

The product of its digits is 13440, while the sum is 33.

The square root of 2748561 is about 1657.8784635793. The cubic root of 2748561 is about 140.0775250897.

The spelling of 2748561 in words is "two million, seven hundred forty-eight thousand, five hundred sixty-one".