2943161 has 4 divisors (see below), whose sum is σ = 3169572. Its totient is φ = 2716752.

The previous prime is 2943137. The next prime is 2943167. The reversal of 2943161 is 1613492.

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 383161 + 2560000 = 619^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 2943161 - 2¹⁸ = 2681017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2943161.

It is not an unprimeable number, because it can be changed into a prime (2943167) 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, 113186 + ... + 113211.

It is an arithmetic number, because the mean of its divisors is an integer number (792393).

2^2943161 is an apocalyptic number.

It is an amenable number.

2943161 is a deficient number, since it is larger than the sum of its proper divisors (226411).

2943161 is a wasteful number, since it uses less digits than its factorization.

2943161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226410.

The product of its digits is 1296, while the sum is 26.

The square root of 2943161 is about 1715.5643386361. The cubic root of 2943161 is about 143.3082986143.

It can be divided in two parts, 29431 and 61, that added together give a palindrome (29492).

The spelling of 2943161 in words is "two million, nine hundred forty-three thousand, one hundred sixty-one".