21063452 has 12 divisors (see below), whose sum is σ = 37275840. Its totient is φ = 10413216.

The previous prime is 21063451. The next prime is 21063461. The reversal of 21063452 is 25436012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21063451) 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 3 ways as a sum of consecutive naturals, for example, 29228 + ... + 29939.

It is an arithmetic number, because the mean of its divisors is an integer number (3106320).

Almost surely, 2^21063452 is an apocalyptic number.

It is an amenable number.

21063452 is a deficient number, since it is larger than the sum of its proper divisors (16212388).

21063452 is a wasteful number, since it uses less digits than its factorization.

21063452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59260 (or 59258 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 21063452 is about 4589.4936539884. The cubic root of 21063452 is about 276.1700100778.

Adding to 21063452 its reverse (25436012), we get a palindrome (46499464).

The spelling of 21063452 in words is "twenty-one million, sixty-three thousand, four hundred fifty-two".