21235093 has 8 divisors (see below), whose sum is σ = 23913216. Its totient is φ = 18681600.

The previous prime is 21235079. The next prime is 21235099. The reversal of 21235093 is 39053212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21235093 - 2⁵ = 21235061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21235099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30796 + ... + 31477.

It is an arithmetic number, because the mean of its divisors is an integer number (2989152).

Almost surely, 2^21235093 is an apocalyptic number.

It is an amenable number.

21235093 is a deficient number, since it is larger than the sum of its proper divisors (2678123).

21235093 is a wasteful number, since it uses less digits than its factorization.

21235093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62315.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 21235093 is about 4608.1550538149. The cubic root of 21235093 is about 276.9181293058.

The spelling of 21235093 in words is "twenty-one million, two hundred thirty-five thousand, ninety-three".