10821055 has 8 divisors (see below), whose sum is σ = 14840352. Its totient is φ = 7420128.

The previous prime is 10821049. The next prime is 10821067. The reversal of 10821055 is 55012801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10821055 - 2⁹ = 10820543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154552 + ... + 154621.

It is an arithmetic number, because the mean of its divisors is an integer number (1855044).

Almost surely, 2^10821055 is an apocalyptic number.

10821055 is a deficient number, since it is larger than the sum of its proper divisors (4019297).

10821055 is an equidigital number, since it uses as much as digits as its factorization.

10821055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309185.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 10821055 is about 3289.5372014920. The cubic root of 10821055 is about 221.1854397906.

Adding to 10821055 its reverse (55012801), we get a palindrome (65833856).

The spelling of 10821055 in words is "ten million, eight hundred twenty-one thousand, fifty-five".