2001277 has 6 divisors (see below), whose sum is σ = 2034974. Its totient is φ = 1968120.

The previous prime is 2001269. The next prime is 2001281. The reversal of 2001277 is 7721002.

It can be written as a sum of positive squares in only one way, i.e., 1819801 + 181476 = 1349^2 + 426^2 .

It is not a de Polignac number, because 2001277 - 2³ = 2001269 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 (2001247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4843 + ... + 5239.

2^2001277 is an apocalyptic number.

It is an amenable number.

2001277 is a deficient number, since it is larger than the sum of its proper divisors (33697).

2001277 is an frugal number, since it uses more digits than its factorization.

2001277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 2001277 is about 1414.6649780072. The cubic root of 2001277 is about 126.0189146040.

Adding to 2001277 its reverse (7721002), we get a palindrome (9722279).

It can be divided in two parts, 2001 and 277, that added together give a triangular number (2278 = T₆₇).

The spelling of 2001277 in words is "two million, one thousand, two hundred seventy-seven".