21363050 has 48 divisors (see below), whose sum is σ = 43169112. Its totient is φ = 7833600.

The previous prime is 21363047. The next prime is 21363059. The reversal of 21363050 is 5036312.

It can be written as a sum of positive squares in 12 ways, for example, as 1283689 + 20079361 = 1133^2 + 4481^2 .

It is not an unprimeable number, because it can be changed into a prime (21363059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34544 + ... + 35156.

Almost surely, 2^21363050 is an apocalyptic number.

21363050 is an abundant number, since it is smaller than the sum of its proper divisors (21806062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21363050 is a wasteful number, since it uses less digits than its factorization.

21363050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 21363050 is about 4622.0179575592. The cubic root of 21363050 is about 277.4732274039.

Adding to 21363050 its reverse (5036312), we get a palindrome (26399362).

The spelling of 21363050 in words is "twenty-one million, three hundred sixty-three thousand, fifty".