21252014 has 8 divisors (see below), whose sum is σ = 36432048. Its totient is φ = 9108000.

The previous prime is 21252001. The next prime is 21252017. The reversal of 21252014 is 41025212.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 21251983 and 21252001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21252017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758987 + ... + 759014.

It is an arithmetic number, because the mean of its divisors is an integer number (4554006).

Almost surely, 2^21252014 is an apocalyptic number.

21252014 is a deficient number, since it is larger than the sum of its proper divisors (15180034).

21252014 is a wasteful number, since it uses less digits than its factorization.

21252014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518010.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 21252014 is about 4609.9906724418. The cubic root of 21252014 is about 276.9916630489.

Adding to 21252014 its reverse (41025212), we get a palindrome (62277226).

The spelling of 21252014 in words is "twenty-one million, two hundred fifty-two thousand, fourteen".