2021687050 has 12 divisors (see below), whose sum is σ = 3760338006. Its totient is φ = 808674800.

The previous prime is 2021687009. The next prime is 2021687053. The reversal of 2021687050 is 507861202.

It can be written as a sum of positive squares in 3 ways, for example, as 1812971241 + 208715809 = 42579^2 + 14447^2 .

It is not an unprimeable number, because it can be changed into a prime (2021687053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20216821 + ... + 20216920.

Almost surely, 2^2021687050 is an apocalyptic number.

2021687050 is a deficient number, since it is larger than the sum of its proper divisors (1738650956).

2021687050 is a wasteful number, since it uses less digits than its factorization.

2021687050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40433753 (or 40433748 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 2021687050 is about 44963.1743763716. The cubic root of 2021687050 is about 1264.4586830253.

The spelling of 2021687050 in words is "two billion, twenty-one million, six hundred eighty-seven thousand, fifty".