2755021 has 2 divisors, whose sum is σ = 2755022. Its totient is φ = 2755020.

The previous prime is 2754991. The next prime is 2755031. The reversal of 2755021 is 1205572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 81796 = 1635^2 + 286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2755021 - 2⁷ = 2754893 is a prime.

It is a Chen prime.

2755021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2754983 and 2755001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2755031) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1377510 + 1377511.

It is an arithmetic number, because the mean of its divisors is an integer number (1377511).

2^2755021 is an apocalyptic number.

It is an amenable number.

2755021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2755021 is an equidigital number, since it uses as much as digits as its factorization.

2755021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2755021 is about 1659.8255932477. The cubic root of 2755021 is about 140.1871815973.

The spelling of 2755021 in words is "two million, seven hundred fifty-five thousand, twenty-one".