21596103 has 54 divisors (see below), whose sum is σ = 36493704. Its totient is φ = 12279168.

The previous prime is 21596087. The next prime is 21596111. The reversal of 21596103 is 30169512.

It is not a de Polignac number, because 21596103 - 2⁴ = 21596087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21596143) 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 53 ways as a sum of consecutive naturals, for example, 938950 + ... + 938972.

Almost surely, 2^21596103 is an apocalyptic number.

21596103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21596103 is a deficient number, since it is larger than the sum of its proper divisors (14897601).

21596103 is a wasteful number, since it uses less digits than its factorization.

21596103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 21596103 is about 4647.1607460900. The cubic root of 21596103 is about 278.4785806097.

The spelling of 21596103 in words is "twenty-one million, five hundred ninety-six thousand, one hundred three".