21832051 has 2 divisors, whose sum is σ = 21832052. Its totient is φ = 21832050.

The previous prime is 21832009. The next prime is 21832079. The reversal of 21832051 is 15023812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21832051 - 2⁹ = 21831539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21832351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10916025 + 10916026.

It is an arithmetic number, because the mean of its divisors is an integer number (10916026).

Almost surely, 2^21832051 is an apocalyptic number.

21832051 is a deficient number, since it is larger than the sum of its proper divisors (1).

21832051 is an equidigital number, since it uses as much as digits as its factorization.

21832051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 21832051 is about 4672.4780363315. The cubic root of 21832051 is about 279.4890810429.

Adding to 21832051 its reverse (15023812), we get a palindrome (36855863).

The spelling of 21832051 in words is "twenty-one million, eight hundred thirty-two thousand, fifty-one".