21850441 has 8 divisors (see below), whose sum is σ = 22541184. Its totient is φ = 21169200.

The previous prime is 21850429. The next prime is 21850453. The reversal of 21850441 is 14405812.

It is an interprime number because it is at equal distance from previous prime (21850429) and next prime (21850453).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21850441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21851441) 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, 2446 + ... + 7048.

It is an arithmetic number, because the mean of its divisors is an integer number (2817648).

Almost surely, 2^21850441 is an apocalyptic number.

It is an amenable number.

21850441 is a deficient number, since it is larger than the sum of its proper divisors (690743).

21850441 is a wasteful number, since it uses less digits than its factorization.

21850441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 21850441 is about 4674.4455286162. The cubic root of 21850441 is about 279.5675339213.

The spelling of 21850441 in words is "twenty-one million, eight hundred fifty thousand, four hundred forty-one".