2745421 has 12 divisors (see below), whose sum is σ = 3270432. Its totient is φ = 2296728.

The previous prime is 2745419. The next prime is 2745433. The reversal of 2745421 is 1245472.

2745421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2745421 - 2¹ = 2745419 is a prime.

It is a Duffinian number.

2745421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745451) 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 11 ways as a sum of consecutive naturals, for example, 1456 + ... + 2758.

It is an arithmetic number, because the mean of its divisors is an integer number (272536).

2^2745421 is an apocalyptic number.

It is an amenable number.

2745421 is a deficient number, since it is larger than the sum of its proper divisors (525011).

2745421 is a wasteful number, since it uses less digits than its factorization.

2745421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1353 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 2745421 is about 1656.9311995373. The cubic root of 2745421 is about 140.0241624962.

The spelling of 2745421 in words is "two million, seven hundred forty-five thousand, four hundred twenty-one".