21095050 has 24 divisors (see below), whose sum is σ = 39613536. Its totient is φ = 8357040.

The previous prime is 21095027. The next prime is 21095051. The reversal of 21095050 is 5059012.

It is a super-2 number, since 2×21095050² = 890002269005000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21095051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3379 + ... + 7321.

It is an arithmetic number, because the mean of its divisors is an integer number (1650564).

Almost surely, 2^21095050 is an apocalyptic number.

21095050 is a deficient number, since it is larger than the sum of its proper divisors (18518486).

21095050 is a wasteful number, since it uses less digits than its factorization.

21095050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062 (or 4057 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 21095050 is about 4592.9347916120. The cubic root of 21095050 is about 276.3080384188.

The spelling of 21095050 in words is "twenty-one million, ninety-five thousand, fifty".