2050021305 has 40 divisors (see below), whose sum is σ = 3690403200. Its totient is φ = 1088718624.

The previous prime is 2050021271. The next prime is 2050021319. The reversal of 2050021305 is 5031200502.

It is a happy number.

It is not a de Polignac number, because 2050021305 - 2¹⁶ = 2049955769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 86206 + ... + 107384.

It is an arithmetic number, because the mean of its divisors is an integer number (92260080).

Almost surely, 2^2050021305 is an apocalyptic number.

It is an amenable number.

2050021305 is a deficient number, since it is larger than the sum of its proper divisors (1640381895).

2050021305 is a wasteful number, since it uses less digits than its factorization.

2050021305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21435 (or 21426 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2050021305 is about 45277.1609644421. The cubic root of 2050021305 is about 1270.3384934837.

Adding to 2050021305 its reverse (5031200502), we get a palindrome (7081221807).

The spelling of 2050021305 in words is "two billion, fifty million, twenty-one thousand, three hundred five".