21714573 has 4 divisors (see below), whose sum is σ = 28952768. Its totient is φ = 14476380.

The previous prime is 21714571. The next prime is 21714607. The reversal of 21714573 is 37541712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21714573 - 2¹ = 21714571 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21714573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3619093 + ... + 3619098.

It is an arithmetic number, because the mean of its divisors is an integer number (7238192).

Almost surely, 2^21714573 is an apocalyptic number.

It is an amenable number.

21714573 is a deficient number, since it is larger than the sum of its proper divisors (7238195).

21714573 is an equidigital number, since it uses as much as digits as its factorization.

21714573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238194.

The product of its digits is 5880, while the sum is 30.

The square root of 21714573 is about 4659.8898055641. The cubic root of 21714573 is about 278.9868700544.

The spelling of 21714573 in words is "twenty-one million, seven hundred fourteen thousand, five hundred seventy-three".