10821541 has 2 divisors, whose sum is σ = 10821542. Its totient is φ = 10821540.

The previous prime is 10821529. The next prime is 10821589. The reversal of 10821541 is 14512801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10048900 + 772641 = 3170^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 10821541 - 2¹³ = 10813349 is a prime.

It is a super-2 number, since 2×10821541² = 234211499229362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10821641) 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, 5410770 + 5410771.

It is an arithmetic number, because the mean of its divisors is an integer number (5410771).

Almost surely, 2^10821541 is an apocalyptic number.

It is an amenable number.

10821541 is a deficient number, since it is larger than the sum of its proper divisors (1).

10821541 is an equidigital number, since it uses as much as digits as its factorization.

10821541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 10821541 is about 3289.6110712362. The cubic root of 10821541 is about 221.1887510671.

The spelling of 10821541 in words is "ten million, eight hundred twenty-one thousand, five hundred forty-one".