2721543 has 8 divisors (see below), whose sum is σ = 3958656. Its totient is φ = 1649400.

The previous prime is 2721533. The next prime is 2721553. The reversal of 2721543 is 3451272.

It is an interprime number because it is at equal distance from previous prime (2721533) and next prime (2721553).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2721543 - 2⁹ = 2721031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41203 + ... + 41268.

It is an arithmetic number, because the mean of its divisors is an integer number (494832).

2^2721543 is an apocalyptic number.

2721543 is a deficient number, since it is larger than the sum of its proper divisors (1237113).

2721543 is a wasteful number, since it uses less digits than its factorization.

2721543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82485.

The product of its digits is 1680, while the sum is 24.

The square root of 2721543 is about 1649.7099745107. The cubic root of 2721543 is about 139.6170315807.

The spelling of 2721543 in words is "two million, seven hundred twenty-one thousand, five hundred forty-three".