21051714 has 8 divisors (see below), whose sum is σ = 42103440. Its totient is φ = 7017236.

The previous prime is 21051707. The next prime is 21051721. The reversal of 21051714 is 41715012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21051707) and next prime (21051721).

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

21051714 is an admirable number.

It is a Curzon 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, 1754304 + ... + 1754315.

It is an arithmetic number, because the mean of its divisors is an integer number (5262930).

Almost surely, 2^21051714 is an apocalyptic number.

21051714 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21051714 is a wasteful number, since it uses less digits than its factorization.

21051714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508624.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 21051714 is about 4588.2146854741. The cubic root of 21051714 is about 276.1187002556.

Adding to 21051714 its reverse (41715012), we get a palindrome (62766726).

The spelling of 21051714 in words is "twenty-one million, fifty-one thousand, seven hundred fourteen".