2744545 has 4 divisors (see below), whose sum is σ = 3293460. Its totient is φ = 2195632.

The previous prime is 2744543. The next prime is 2744551. The reversal of 2744545 is 5454472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 913936 + 1830609 = 956^2 + 1353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2744545 - 2¹ = 2744543 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2744543) 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, 274450 + ... + 274459.

It is an arithmetic number, because the mean of its divisors is an integer number (823365).

2^2744545 is an apocalyptic number.

It is an amenable number.

2744545 is a deficient number, since it is larger than the sum of its proper divisors (548915).

2744545 is an equidigital number, since it uses as much as digits as its factorization.

2744545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548914.

The product of its digits is 22400, while the sum is 31.

The square root of 2744545 is about 1656.6668343394. Note that the first 3 decimals coincide. The cubic root of 2744545 is about 140.0092680939.

The spelling of 2744545 in words is "two million, seven hundred forty-four thousand, five hundred forty-five".