21077050 has 24 divisors (see below), whose sum is σ = 40266396. Its totient is φ = 8202240.

The previous prime is 21077027. The next prime is 21077051. The reversal of 21077050 is 5077012.

It can be written as a sum of positive squares in 6 ways, for example, as 14891881 + 6185169 = 3859^2 + 2487^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21077051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3847 + ... + 7546.

Almost surely, 2^21077050 is an apocalyptic number.

21077050 is a deficient number, since it is larger than the sum of its proper divisors (19189346).

21077050 is a wasteful number, since it uses less digits than its factorization.

21077050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11442 (or 11437 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 21077050 is about 4590.9748420134. The cubic root of 21077050 is about 276.2294266122.

The spelling of 21077050 in words is "twenty-one million, seventy-seven thousand, fifty".