2721097 has 4 divisors (see below), whose sum is σ = 2724480. Its totient is φ = 2717716.

The previous prime is 2721067. The next prime is 2721109. The reversal of 2721097 is 7901272.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2721097 - 2¹⁹ = 2196809 is a prime.

It is a Duffinian number.

2721097 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2721007) 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, 288 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (681120).

2^2721097 is an apocalyptic number.

It is an amenable number.

2721097 is a deficient number, since it is larger than the sum of its proper divisors (3383).

2721097 is a wasteful number, since it uses less digits than its factorization.

2721097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2721097 is about 1649.5747936968. The cubic root of 2721097 is about 139.6094044616.

It can be divided in two parts, 272 and 1097, that added together give a square (1369 = 37²).

The spelling of 2721097 in words is "two million, seven hundred twenty-one thousand, ninety-seven".