21052162 has 16 divisors (see below), whose sum is σ = 32712192. Its totient is φ = 10150560.

The previous prime is 21052159. The next prime is 21052169. The reversal of 21052162 is 26125012.

It is not an unprimeable number, because it can be changed into a prime (21052169) 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, 27963 + ... + 28705.

It is an arithmetic number, because the mean of its divisors is an integer number (2044512).

Almost surely, 2^21052162 is an apocalyptic number.

21052162 is a deficient number, since it is larger than the sum of its proper divisors (11660030).

21052162 is a wasteful number, since it uses less digits than its factorization.

21052162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 21052162 is about 4588.2635059464. The cubic root of 21052162 is about 276.1206589291.

Adding to 21052162 its reverse (26125012), we get a palindrome (47177174).

The spelling of 21052162 in words is "twenty-one million, fifty-two thousand, one hundred sixty-two".