21044514 has 32 divisors (see below), whose sum is σ = 44513280. Its totient is φ = 6614352.

The previous prime is 21044479. The next prime is 21044531. The reversal of 21044514 is 41544012.

It is a happy number.

It is a super-3 number, since 3×21044514³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41587 + ... + 42089.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^21044514 is an apocalyptic number.

21044514 is an abundant number, since it is smaller than the sum of its proper divisors (23468766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21044514 is a wasteful number, since it uses less digits than its factorization.

21044514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 21044514 is about 4587.4299994659. The cubic root of 21044514 is about 276.0872177623.

Adding to 21044514 its reverse (41544012), we get a palindrome (62588526).

The spelling of 21044514 in words is "twenty-one million, forty-four thousand, five hundred fourteen".