2772001 has 4 divisors (see below), whose sum is σ = 2784132. Its totient is φ = 2759872.

The previous prime is 2771999. The next prime is 2772017. The reversal of 2772001 is 1002772.

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 1918225 + 853776 = 1385^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772001 - 2¹ = 2771999 is a prime.

It is a Duffinian number.

2772001 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2772001.

It is not an unprimeable number, because it can be changed into a prime (2772041) 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, 5716 + ... + 6181.

It is an arithmetic number, because the mean of its divisors is an integer number (696033).

2^2772001 is an apocalyptic number.

It is an amenable number.

2772001 is a deficient number, since it is larger than the sum of its proper divisors (12131).

2772001 is a wasteful number, since it uses less digits than its factorization.

2772001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12130.

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

The square root of 2772001 is about 1664.9327313739. The cubic root of 2772001 is about 140.4745967927.

Adding to 2772001 its reverse (1002772), we get a palindrome (3774773).

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

The spelling of 2772001 in words is "two million, seven hundred seventy-two thousand, one".