2827421 has 2 divisors, whose sum is σ = 2827422. Its totient is φ = 2827420.

The previous prime is 2827403. The next prime is 2827427. The reversal of 2827421 is 1247282.

2827421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2524921 + 302500 = 1589^2 + 550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2827421 is a prime.

It is a super-2 number, since 2×2827421² = 15988619022482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2827427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1413710 + 1413711.

It is an arithmetic number, because the mean of its divisors is an integer number (1413711).

2^2827421 is an apocalyptic number.

It is an amenable number.

2827421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2827421 is an equidigital number, since it uses as much as digits as its factorization.

2827421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 26.

The square root of 2827421 is about 1681.4936812251. The cubic root of 2827421 is about 141.4045855028.

The spelling of 2827421 in words is "two million, eight hundred twenty-seven thousand, four hundred twenty-one".