21752883 has 12 divisors (see below), whose sum is σ = 32152120. Its totient is φ = 14164416.

The previous prime is 21752881. The next prime is 21752893. The reversal of 21752883 is 38825712.

It is not a de Polignac number, because 21752883 - 2¹ = 21752881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21752881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27718 + ... + 28491.

Almost surely, 2^21752883 is an apocalyptic number.

21752883 is a deficient number, since it is larger than the sum of its proper divisors (10399237).

21752883 is a wasteful number, since it uses less digits than its factorization.

21752883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56258 (or 56255 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 21752883 is about 4663.9986063463. The cubic root of 21752883 is about 279.1508414682.

The spelling of 21752883 in words is "twenty-one million, seven hundred fifty-two thousand, eight hundred eighty-three".