21327055 has 8 divisors (see below), whose sum is σ = 25819632. Its totient is φ = 16910208.

The previous prime is 21327043. The next prime is 21327067. The reversal of 21327055 is 55072312.

It is an interprime number because it is at equal distance from previous prime (21327043) and next prime (21327067).

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 21327055 - 2¹³ = 21318863 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

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, 18309 + ... + 19438.

It is an arithmetic number, because the mean of its divisors is an integer number (3227454).

Almost surely, 2^21327055 is an apocalyptic number.

21327055 is a deficient number, since it is larger than the sum of its proper divisors (4492577).

21327055 is a wasteful number, since it uses less digits than its factorization.

21327055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37865.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 21327055 is about 4618.1224539850. The cubic root of 21327055 is about 277.3172998633.

Adding to 21327055 its reverse (55072312), we get a palindrome (76399367).

The spelling of 21327055 in words is "twenty-one million, three hundred twenty-seven thousand, fifty-five".