21160053 has 48 divisors (see below), whose sum is σ = 35380800. Its totient is φ = 12096000.

The previous prime is 21160043. The next prime is 21160079. The reversal of 21160053 is 35006112.

21160053 is a `hidden beast` number, since 2 + 11 + 600 + 53 = 666.

It is not a de Polignac number, because 21160053 - 2⁵ = 21160021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160003) 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 47 ways as a sum of consecutive naturals, for example, 84178 + ... + 84428.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^21160053 is an apocalyptic number.

It is an amenable number.

21160053 is a deficient number, since it is larger than the sum of its proper divisors (14220747).

21160053 is a wasteful number, since it uses less digits than its factorization.

21160053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 21160053 is about 4600.0057608660. The cubic root of 21160053 is about 276.5915557139.

Adding to 21160053 its reverse (35006112), we get a palindrome (56166165).

The spelling of 21160053 in words is "twenty-one million, one hundred sixty thousand, fifty-three".