21852853 has 8 divisors (see below), whose sum is σ = 23905440. Its totient is φ = 19811280.

The previous prime is 21852851. The next prime is 21852881. The reversal of 21852853 is 35825812.

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 21852853 - 2¹ = 21852851 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 (21852851) 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, 1726 + ... + 6832.

It is an arithmetic number, because the mean of its divisors is an integer number (2988180).

Almost surely, 2^21852853 is an apocalyptic number.

It is an amenable number.

21852853 is a deficient number, since it is larger than the sum of its proper divisors (2052587).

21852853 is a wasteful number, since it uses less digits than its factorization.

21852853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507.

The product of its digits is 19200, while the sum is 34.

The square root of 21852853 is about 4674.7035200107. The cubic root of 21852853 is about 279.5778203968.

The spelling of 21852853 in words is "twenty-one million, eight hundred fifty-two thousand, eight hundred fifty-three".