2730515 has 4 divisors (see below), whose sum is σ = 3276624. Its totient is φ = 2184408.

The previous prime is 2730493. The next prime is 2730517. The reversal of 2730515 is 5150372.

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

It is a cyclic number.

It is not a de Polignac number, because 2730515 - 2¹⁰ = 2729491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2730517) 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, 273047 + ... + 273056.

It is an arithmetic number, because the mean of its divisors is an integer number (819156).

2^2730515 is an apocalyptic number.

2730515 is a deficient number, since it is larger than the sum of its proper divisors (546109).

2730515 is an equidigital number, since it uses as much as digits as its factorization.

2730515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546108.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 2730515 is about 1652.4270029263. The cubic root of 2730515 is about 139.7702865553.

Adding to 2730515 its reverse (5150372), we get a palindrome (7880887).

The spelling of 2730515 in words is "two million, seven hundred thirty thousand, five hundred fifteen".