21514927 has 8 divisors (see below), whose sum is σ = 24725792. Its totient is φ = 18338400.

The previous prime is 21514903. The next prime is 21514931. The reversal of 21514927 is 72941512.

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

It is a cyclic number.

It is not a de Polignac number, because 21514927 - 2¹⁵ = 21482159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7224 + ... + 9757.

It is an arithmetic number, because the mean of its divisors is an integer number (3090724).

Almost surely, 2^21514927 is an apocalyptic number.

21514927 is a deficient number, since it is larger than the sum of its proper divisors (3210865).

21514927 is a wasteful number, since it uses less digits than its factorization.

21514927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17169.

The product of its digits is 5040, while the sum is 31.

The square root of 21514927 is about 4638.4185882691. The cubic root of 21514927 is about 278.1292249832.

The spelling of 21514927 in words is "twenty-one million, five hundred fourteen thousand, nine hundred twenty-seven".