21411050 has 12 divisors (see below), whose sum is σ = 39824646. Its totient is φ = 8564400.

The previous prime is 21411023. The next prime is 21411059. The reversal of 21411050 is 5011412.

It can be written as a sum of positive squares in 3 ways, for example, as 10195249 + 11215801 = 3193^2 + 3349^2 .

It is not an unprimeable number, because it can be changed into a prime (21411059) 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 in 5 ways as a sum of consecutive naturals, for example, 214061 + ... + 214160.

Almost surely, 2^21411050 is an apocalyptic number.

21411050 is a deficient number, since it is larger than the sum of its proper divisors (18413596).

21411050 is a wasteful number, since it uses less digits than its factorization.

21411050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428233 (or 428228 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 21411050 is about 4627.2075812524. The cubic root of 21411050 is about 277.6808873932.

Adding to 21411050 its reverse (5011412), we get a palindrome (26422462).

The spelling of 21411050 in words is "twenty-one million, four hundred eleven thousand, fifty".