21067053 has 8 divisors (see below), whose sum is σ = 32102208. Its totient is φ = 12038304.

The previous prime is 21067043. The next prime is 21067087. The reversal of 21067053 is 35076012.

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

It is not a de Polignac number, because 21067053 - 2⁴ = 21067037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21067003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501576 + ... + 501617.

It is an arithmetic number, because the mean of its divisors is an integer number (4012776).

Almost surely, 2^21067053 is an apocalyptic number.

It is an amenable number.

21067053 is a deficient number, since it is larger than the sum of its proper divisors (11035155).

21067053 is a wasteful number, since it uses less digits than its factorization.

21067053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003203.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 21067053 is about 4589.8859462954. The cubic root of 21067053 is about 276.1857471554.

The spelling of 21067053 in words is "twenty-one million, sixty-seven thousand, fifty-three".