2732921 has 2 divisors, whose sum is σ = 2732922. Its totient is φ = 2732920.

The previous prime is 2732911. The next prime is 2732953. The reversal of 2732921 is 1292372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2706025 + 26896 = 1645^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 2732921 - 2¹⁸ = 2470777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2732911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1366460 + 1366461.

It is an arithmetic number, because the mean of its divisors is an integer number (1366461).

2^2732921 is an apocalyptic number.

It is an amenable number.

2732921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2732921 is an equidigital number, since it uses as much as digits as its factorization.

2732921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

The square root of 2732921 is about 1653.1548626792. The cubic root of 2732921 is about 139.8113274803.

The spelling of 2732921 in words is "two million, seven hundred thirty-two thousand, nine hundred twenty-one".