21054341 has 8 divisors (see below), whose sum is σ = 26249664. Its totient is φ = 16405920.

The previous prime is 21054329. The next prime is 21054343. The reversal of 21054341 is 14345012.

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 21054341 - 2⁶ = 21054277 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054343) 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, 136640 + ... + 136793.

It is an arithmetic number, because the mean of its divisors is an integer number (3281208).

Almost surely, 2^21054341 is an apocalyptic number.

It is an amenable number.

21054341 is a deficient number, since it is larger than the sum of its proper divisors (5195323).

21054341 is a wasteful number, since it uses less digits than its factorization.

21054341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273451.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 21054341 is about 4588.5009534705. The cubic root of 21054341 is about 276.1301852057.

Adding to 21054341 its reverse (14345012), we get a palindrome (35399353).

It can be divided in two parts, 2105 and 4341, that added together give a palindrome (6446).

The spelling of 21054341 in words is "twenty-one million, fifty-four thousand, three hundred forty-one".