21465050 has 24 divisors (see below), whose sum is σ = 42275196. Its totient is φ = 8080640.

The previous prime is 21465029. The next prime is 21465061. The reversal of 21465050 is 5056412.

It can be written as a sum of positive squares in 6 ways, for example, as 16638241 + 4826809 = 4079^2 + 2197^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11777 + ... + 13476.

Almost surely, 2^21465050 is an apocalyptic number.

21465050 is a deficient number, since it is larger than the sum of its proper divisors (20810146).

21465050 is a wasteful number, since it uses less digits than its factorization.

21465050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25282 (or 25277 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 21465050 is about 4633.0389594736. The cubic root of 21465050 is about 277.9141342391.

The spelling of 21465050 in words is "twenty-one million, four hundred sixty-five thousand, fifty".