21466153 has 8 divisors (see below), whose sum is σ = 22478976. Its totient is φ = 20460000.

The previous prime is 21466141. The next prime is 21466157. The reversal of 21466153 is 35166412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21466153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21466157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5653 + ... + 8653.

It is an arithmetic number, because the mean of its divisors is an integer number (2809872).

Almost surely, 2^21466153 is an apocalyptic number.

21466153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21466153 is a deficient number, since it is larger than the sum of its proper divisors (1012823).

21466153 is a wasteful number, since it uses less digits than its factorization.

21466153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335.

The product of its digits is 4320, while the sum is 28.

The square root of 21466153 is about 4633.1579942842. The cubic root of 21466153 is about 277.9188944430.

The spelling of 21466153 in words is "twenty-one million, four hundred sixty-six thousand, one hundred fifty-three".