2020155773 has 4 divisors (see below), whose sum is σ = 2031833148. Its totient is φ = 2008478400.

The previous prime is 2020155769. The next prime is 2020155799. The reversal of 2020155773 is 3775510202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1300467844 + 719687929 = 36062^2 + 26827^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020155773 - 2² = 2020155769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020155733) 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, 5838428 + ... + 5838773.

It is an arithmetic number, because the mean of its divisors is an integer number (507958287).

Almost surely, 2^2020155773 is an apocalyptic number.

It is an amenable number.

2020155773 is a deficient number, since it is larger than the sum of its proper divisors (11677375).

2020155773 is a wasteful number, since it uses less digits than its factorization.

2020155773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11677374.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 2020155773 is about 44946.1430269606. The cubic root of 2020155773 is about 1264.1393580410.

Adding to 2020155773 its reverse (3775510202), we get a palindrome (5795665975).

The spelling of 2020155773 in words is "two billion, twenty million, one hundred fifty-five thousand, seven hundred seventy-three".