21343052 has 6 divisors (see below), whose sum is σ = 37350348. Its totient is φ = 10671524.

The previous prime is 21343039. The next prime is 21343111. The reversal of 21343052 is 25034312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2667878 + ... + 2667885.

It is an arithmetic number, because the mean of its divisors is an integer number (6225058).

Almost surely, 2^21343052 is an apocalyptic number.

It is an amenable number.

21343052 is a deficient number, since it is larger than the sum of its proper divisors (16007296).

21343052 is a wasteful number, since it uses less digits than its factorization.

21343052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335767 (or 5335765 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 21343052 is about 4619.8541102507. The cubic root of 21343052 is about 277.3866192658.

Adding to 21343052 its reverse (25034312), we get a palindrome (46377364).

The spelling of 21343052 in words is "twenty-one million, three hundred forty-three thousand, fifty-two".