21703054 has 8 divisors (see below), whose sum is σ = 34268040. Its totient is φ = 10280376.

The previous prime is 21703037. The next prime is 21703057. The reversal of 21703054 is 45030712.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21703057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285529 + ... + 285604.

It is an arithmetic number, because the mean of its divisors is an integer number (4283505).

Almost surely, 2^21703054 is an apocalyptic number.

21703054 is a deficient number, since it is larger than the sum of its proper divisors (12564986).

21703054 is a wasteful number, since it uses less digits than its factorization.

21703054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571154.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 21703054 is about 4658.6536681750. The cubic root of 21703054 is about 278.9375296387.

Adding to 21703054 its reverse (45030712), we get a palindrome (66733766).

The spelling of 21703054 in words is "twenty-one million, seven hundred three thousand, fifty-four".