21048183 has 12 divisors (see below), whose sum is σ = 32741800. Its totient is φ = 12952656.

The previous prime is 21048173. The next prime is 21048221. The reversal of 21048183 is 38184012.

It is not a de Polignac number, because 21048183 - 2⁶ = 21048119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21048103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89833 + ... + 90066.

Almost surely, 2^21048183 is an apocalyptic number.

21048183 is a deficient number, since it is larger than the sum of its proper divisors (11693617).

21048183 is a wasteful number, since it uses less digits than its factorization.

21048183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179918 (or 179915 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 21048183 is about 4587.8298791477. The cubic root of 21048183 is about 276.1032616133.

The spelling of 21048183 in words is "twenty-one million, forty-eight thousand, one hundred eighty-three".