21107054 has 8 divisors (see below), whose sum is σ = 33037200. Its totient is φ = 10094656.

The previous prime is 21107029. The next prime is 21107083. The reversal of 21107054 is 45070112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229379 + ... + 229470.

It is an arithmetic number, because the mean of its divisors is an integer number (4129650).

Almost surely, 2^21107054 is an apocalyptic number.

21107054 is a deficient number, since it is larger than the sum of its proper divisors (11930146).

21107054 is a wasteful number, since it uses less digits than its factorization.

21107054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458874.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 21107054 is about 4594.2413954863. The cubic root of 21107054 is about 276.3604389071.

Adding to 21107054 its reverse (45070112), we get a palindrome (66177166).

The spelling of 21107054 in words is "twenty-one million, one hundred seven thousand, fifty-four".