21052483 has 2 divisors, whose sum is σ = 21052484. Its totient is φ = 21052482.

The previous prime is 21052481. The next prime is 21052489. The reversal of 21052483 is 38425012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21052483 - 2¹ = 21052481 is a prime.

Together with 21052481, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21052481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526241 + 10526242.

It is an arithmetic number, because the mean of its divisors is an integer number (10526242).

Almost surely, 2^21052483 is an apocalyptic number.

21052483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21052483 is an equidigital number, since it uses as much as digits as its factorization.

21052483 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 21052483 is about 4588.2984863673. The cubic root of 21052483 is about 276.1220623365.

Adding to 21052483 its reverse (38425012), we get a palindrome (59477495).

The spelling of 21052483 in words is "twenty-one million, fifty-two thousand, four hundred eighty-three".