21832753 has 2 divisors, whose sum is σ = 21832754. Its totient is φ = 21832752.

The previous prime is 21832751. The next prime is 21832757. The reversal of 21832753 is 35723812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21594609 + 238144 = 4647^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 21832753 - 2¹ = 21832751 is a prime.

Together with 21832751, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21832751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10916376 + 10916377.

It is an arithmetic number, because the mean of its divisors is an integer number (10916377).

Almost surely, 2^21832753 is an apocalyptic number.

It is an amenable number.

21832753 is a deficient number, since it is larger than the sum of its proper divisors (1).

21832753 is an equidigital number, since it uses as much as digits as its factorization.

21832753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 21832753 is about 4672.5531564660. The cubic root of 21832753 is about 279.4920766270.

The spelling of 21832753 in words is "twenty-one million, eight hundred thirty-two thousand, seven hundred fifty-three".