2730545 has 4 divisors (see below), whose sum is σ = 3276660. Its totient is φ = 2184432.

The previous prime is 2730529. The next prime is 2730569. The reversal of 2730545 is 5450372.

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 795664 + 1934881 = 892^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2730545 - 2⁴ = 2730529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273050 + ... + 273059.

It is an arithmetic number, because the mean of its divisors is an integer number (819165).

2^2730545 is an apocalyptic number.

It is an amenable number.

2730545 is a deficient number, since it is larger than the sum of its proper divisors (546115).

2730545 is an equidigital number, since it uses as much as digits as its factorization.

2730545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546114.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 2730545 is about 1652.4360804582. The cubic root of 2730545 is about 139.7707984359.

The spelling of 2730545 in words is "two million, seven hundred thirty thousand, five hundred forty-five".