2923161 has 4 divisors (see below), whose sum is σ = 3897552. Its totient is φ = 1948772.

The previous prime is 2923157. The next prime is 2923163. The reversal of 2923161 is 1613292.

2923161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2923161 - 2² = 2923157 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2923163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487191 + ... + 487196.

It is an arithmetic number, because the mean of its divisors is an integer number (974388).

2^2923161 is an apocalyptic number.

It is an amenable number.

2923161 is a deficient number, since it is larger than the sum of its proper divisors (974391).

2923161 is an equidigital number, since it uses as much as digits as its factorization.

2923161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974390.

The product of its digits is 648, while the sum is 24.

The square root of 2923161 is about 1709.7254165509. The cubic root of 2923161 is about 142.9829474181.

It can be divided in two parts, 29231 and 61, that added together give a palindrome (29292).

The spelling of 2923161 in words is "two million, nine hundred twenty-three thousand, one hundred sixty-one".