2517161 has 2 divisors, whose sum is σ = 2517162. Its totient is φ = 2517160.

The previous prime is 2517157. The next prime is 2517197. The reversal of 2517161 is 1617152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2383936 + 133225 = 1544^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2517161 - 2² = 2517157 is a prime.

It is not a weakly prime, because it can be changed into another prime (2517121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258580 + 1258581.

It is an arithmetic number, because the mean of its divisors is an integer number (1258581).

2^2517161 is an apocalyptic number.

It is an amenable number.

2517161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517161 is an equidigital number, since it uses as much as digits as its factorization.

2517161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 23.

The square root of 2517161 is about 1586.5563336989. The cubic root of 2517161 is about 136.0307204247.

Subtracting from 2517161 its reverse (1617152), we obtain a palindrome (900009).

It can be divided in two parts, 25 and 17161, that multiplied together give a square (429025 = 655²).

The spelling of 2517161 in words is "two million, five hundred seventeen thousand, one hundred sixty-one".