21050362 has 4 divisors (see below), whose sum is σ = 31575546. Its totient is φ = 10525180.

The previous prime is 21050357. The next prime is 21050363. The reversal of 21050362 is 26305012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18054001 + 2996361 = 4249^2 + 1731^2 .

It is not an unprimeable number, because it can be changed into a prime (21050363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5262589 + ... + 5262592.

Almost surely, 2^21050362 is an apocalyptic number.

21050362 is a deficient number, since it is larger than the sum of its proper divisors (10525184).

21050362 is a wasteful number, since it uses less digits than its factorization.

21050362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525183.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 21050362 is about 4588.0673491133. The cubic root of 21050362 is about 276.1127890905.

Adding to 21050362 its reverse (26305012), we get a palindrome (47355374).

It can be divided in two parts, 21050 and 362, that added together give a palindrome (21412).

The spelling of 21050362 in words is "twenty-one million, fifty thousand, three hundred sixty-two".