2821493 has 2 divisors, whose sum is σ = 2821494. Its totient is φ = 2821492.

The previous prime is 2821477. The next prime is 2821501. The reversal of 2821493 is 3941282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 813604 = 1417^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 2821493 - 2⁴ = 2821477 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹³ + 8⁵ + 2¹⁷ + 1 + 4¹⁰ + 9⁴ + 3¹³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2821463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410746 + 1410747.

It is an arithmetic number, because the mean of its divisors is an integer number (1410747).

2^2821493 is an apocalyptic number.

It is an amenable number.

2821493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821493 is an equidigital number, since it uses as much as digits as its factorization.

2821493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 2821493 is about 1679.7300378335. The cubic root of 2821493 is about 141.3056929206.

The spelling of 2821493 in words is "two million, eight hundred twenty-one thousand, four hundred ninety-three".