2721533 has 2 divisors, whose sum is σ = 2721534. Its totient is φ = 2721532.

The previous prime is 2721517. The next prime is 2721553. The reversal of 2721533 is 3351272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 822649 = 1378^2 + 907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2721533 - 2⁴ = 2721517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2721499 and 2721508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2721553) 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, 1360766 + 1360767.

It is an arithmetic number, because the mean of its divisors is an integer number (1360767).

2^2721533 is an apocalyptic number.

It is an amenable number.

2721533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721533 is an equidigital number, since it uses as much as digits as its factorization.

2721533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 23.

The square root of 2721533 is about 1649.7069436721. The cubic root of 2721533 is about 139.6168605782.

The spelling of 2721533 in words is "two million, seven hundred twenty-one thousand, five hundred thirty-three".