41822821 has 2 divisors, whose sum is σ = 41822822. Its totient is φ = 41822820.

The previous prime is 41822797. The next prime is 41822827. The reversal of 41822821 is 12822814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28206721 + 13616100 = 5311^2 + 3690^2 .

It is a cyclic number.

It is not a de Polignac number, because 41822821 - 2⁹ = 41822309 is a prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 41822821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41822827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20911410 + 20911411.

It is an arithmetic number, because the mean of its divisors is an integer number (20911411).

Almost surely, 2^41822821 is an apocalyptic number.

It is an amenable number.

41822821 is a deficient number, since it is larger than the sum of its proper divisors (1).

41822821 is an equidigital number, since it uses as much as digits as its factorization.

41822821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 28.

The square root of 41822821 is about 6467.0565947732. The cubic root of 41822821 is about 347.1131827438.

The spelling of 41822821 in words is "forty-one million, eight hundred twenty-two thousand, eight hundred twenty-one".