2772231 has 24 divisors (see below), whose sum is σ = 4647552. Its totient is φ = 1438800.

The previous prime is 2772227. The next prime is 2772239. The reversal of 2772231 is 1322772.

It is not a de Polignac number, because 2772231 - 2² = 2772227 is a prime.

It is a super-2 number, since 2×2772231² = 15370529434722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1996 + ... + 3086.

It is an arithmetic number, because the mean of its divisors is an integer number (193648).

2^2772231 is an apocalyptic number.

2772231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2772231 is a deficient number, since it is larger than the sum of its proper divisors (1875321).

2772231 is a wasteful number, since it uses less digits than its factorization.

2772231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1112 counting only the distinct ones).

The product of its digits is 1176, while the sum is 24.

The square root of 2772231 is about 1665.0018018008. The cubic root of 2772231 is about 140.4784818639.

It can be divided in two parts, 2772 and 231, that added together give a palindrome (3003).

The spelling of 2772231 in words is "two million, seven hundred seventy-two thousand, two hundred thirty-one".