21792803 has 2 divisors, whose sum is σ = 21792804. Its totient is φ = 21792802.

The previous prime is 21792781. The next prime is 21792851. The reversal of 21792803 is 30829712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21792803 - 2²² = 17598499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21792803.

It is not a weakly prime, because it can be changed into another prime (21792863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10896401 + 10896402.

It is an arithmetic number, because the mean of its divisors is an integer number (10896402).

Almost surely, 2^21792803 is an apocalyptic number.

21792803 is a deficient number, since it is larger than the sum of its proper divisors (1).

21792803 is an equidigital number, since it uses as much as digits as its factorization.

21792803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 21792803 is about 4668.2762343289. The cubic root of 21792803 is about 279.3214991800.

The spelling of 21792803 in words is "twenty-one million, seven hundred ninety-two thousand, eight hundred three".