2021077049 has 4 divisors (see below), whose sum is σ = 2021167140. Its totient is φ = 2020986960.

The previous prime is 2021077027. The next prime is 2021077061. The reversal of 2021077049 is 9407701202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1845991225 + 175085824 = 42965^2 + 13232^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021077049 - 2¹² = 2021072953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021077349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18287 + ... + 66155.

It is an arithmetic number, because the mean of its divisors is an integer number (505291785).

Almost surely, 2^2021077049 is an apocalyptic number.

It is an amenable number.

2021077049 is a deficient number, since it is larger than the sum of its proper divisors (90091).

2021077049 is an equidigital number, since it uses as much as digits as its factorization.

2021077049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90090.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 2021077049 is about 44956.3905245962. The cubic root of 2021077049 is about 1264.3314957420.

The spelling of 2021077049 in words is "two billion, twenty-one million, seventy-seven thousand, forty-nine".