2523161 has 2 divisors, whose sum is σ = 2523162. Its totient is φ = 2523160.

The previous prime is 2523151. The next prime is 2523163. The reversal of 2523161 is 1613252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 403225 = 1456^2 + 635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2523161 is a prime.

Together with 2523163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2523163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261580 + 1261581.

It is an arithmetic number, because the mean of its divisors is an integer number (1261581).

2^2523161 is an apocalyptic number.

It is an amenable number.

2523161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523161 is an equidigital number, since it uses as much as digits as its factorization.

2523161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 2523161 is about 1588.4460960322. The cubic root of 2523161 is about 136.1387173153.

Subtracting from 2523161 its reverse (1613252), we obtain a palindrome (909909).

The spelling of 2523161 in words is "two million, five hundred twenty-three thousand, one hundred sixty-one".