21054050 has 12 divisors (see below), whose sum is σ = 39160626. Its totient is φ = 8421600.

The previous prime is 21054049. The next prime is 21054067. The reversal of 21054050 is 5045012.

It can be written as a sum of positive squares in 3 ways, for example, as 14205361 + 6848689 = 3769^2 + 2617^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210491 + ... + 210590.

Almost surely, 2^21054050 is an apocalyptic number.

21054050 is a deficient number, since it is larger than the sum of its proper divisors (18106576).

21054050 is a wasteful number, since it uses less digits than its factorization.

21054050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421093 (or 421088 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 21054050 is about 4588.4692436585. The cubic root of 21054050 is about 276.1289130333.

Adding to 21054050 its reverse (5045012), we get a palindrome (26099062).

The spelling of 21054050 in words is "twenty-one million, fifty-four thousand, fifty".