21044954 has 16 divisors (see below), whose sum is σ = 37646208. Its totient is φ = 8626992.

The previous prime is 21044927. The next prime is 21044987. The reversal of 21044954 is 45944012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32357 + ... + 33000.

It is an arithmetic number, because the mean of its divisors is an integer number (2352888).

Almost surely, 2^21044954 is an apocalyptic number.

21044954 is a deficient number, since it is larger than the sum of its proper divisors (16601254).

21044954 is a wasteful number, since it uses less digits than its factorization.

21044954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65389.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 21044954 is about 4587.4779563503. The cubic root of 21044954 is about 276.0891418985.

Adding to 21044954 its reverse (45944012), we get a palindrome (66988966).

The spelling of 21044954 in words is "twenty-one million, forty-four thousand, nine hundred fifty-four".