21050467 has 8 divisors (see below), whose sum is σ = 21297600. Its totient is φ = 20805120.

The previous prime is 21050459. The next prime is 21050473. The reversal of 21050467 is 76405012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21050467 - 2³ = 21050459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21050417) 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, 46659 + ... + 47107.

It is an arithmetic number, because the mean of its divisors is an integer number (2662200).

Almost surely, 2^21050467 is an apocalyptic number.

21050467 is a deficient number, since it is larger than the sum of its proper divisors (247133).

21050467 is a wasteful number, since it uses less digits than its factorization.

21050467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 21050467 is about 4588.0787918256. The cubic root of 21050467 is about 276.1132481767.

Adding to 21050467 its reverse (76405012), we get a palindrome (97455479).

The spelling of 21050467 in words is "twenty-one million, fifty thousand, four hundred sixty-seven".