2752021 has 2 divisors, whose sum is σ = 2752022. Its totient is φ = 2752020.

The previous prime is 2752003. The next prime is 2752033. The reversal of 2752021 is 1202572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 12996 = 1655^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2752021 - 2⁵ = 2751989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2752021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2752051) 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, 1376010 + 1376011.

It is an arithmetic number, because the mean of its divisors is an integer number (1376011).

2^2752021 is an apocalyptic number.

It is an amenable number.

2752021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2752021 is an equidigital number, since it uses as much as digits as its factorization.

2752021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 2752021 is about 1658.9216376912. The cubic root of 2752021 is about 140.1362788649.

Adding to 2752021 its reverse (1202572), we get a palindrome (3954593).

The spelling of 2752021 in words is "two million, seven hundred fifty-two thousand, twenty-one".