2783121 has 32 divisors (see below), whose sum is σ = 4427136. Its totient is φ = 1548800.

The previous prime is 2783117. The next prime is 2783153. The reversal of 2783121 is 1213872.

It is not a de Polignac number, because 2783121 - 2² = 2783117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2783091 and 2783100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67861 + ... + 67901.

It is an arithmetic number, because the mean of its divisors is an integer number (138348).

2^2783121 is an apocalyptic number.

It is an amenable number.

2783121 is a deficient number, since it is larger than the sum of its proper divisors (1644015).

2783121 is a wasteful number, since it uses less digits than its factorization.

2783121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 72 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 2783121 is about 1668.2688632232. The cubic root of 2783121 is about 140.6621861165.

Adding to 2783121 its reverse (1213872), we get a palindrome (3996993).

The spelling of 2783121 in words is "two million, seven hundred eighty-three thousand, one hundred twenty-one".