21547114 has 4 divisors (see below), whose sum is σ = 32320674. Its totient is φ = 10773556.

The previous prime is 21547111. The next prime is 21547129. The reversal of 21547114 is 41174512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18774889 + 2772225 = 4333^2 + 1665^2 .

It is not an unprimeable number, because it can be changed into a prime (21547111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5386777 + ... + 5386780.

Almost surely, 2^21547114 is an apocalyptic number.

21547114 is a deficient number, since it is larger than the sum of its proper divisors (10773560).

21547114 is a wasteful number, since it uses less digits than its factorization.

21547114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10773559.

The product of its digits is 1120, while the sum is 25.

The square root of 21547114 is about 4641.8869008195. The cubic root of 21547114 is about 278.2678525330.

The spelling of 21547114 in words is "twenty-one million, five hundred forty-seven thousand, one hundred fourteen".