4257161 has 2 divisors, whose sum is σ = 4257162. Its totient is φ = 4257160.

The previous prime is 4257133. The next prime is 4257163. The reversal of 4257161 is 1617524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2421136 + 1836025 = 1556^2 + 1355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4257161 is a prime.

Together with 4257163, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4257161.

It is not a weakly prime, because it can be changed into another prime (4257163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128580 + 2128581.

It is an arithmetic number, because the mean of its divisors is an integer number (2128581).

Almost surely, 2^4257161 is an apocalyptic number.

It is an amenable number.

4257161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4257161 is an equidigital number, since it uses as much as digits as its factorization.

4257161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 4257161 is about 2063.2888794350. The cubic root of 4257161 is about 162.0715149373.

The spelling of 4257161 in words is "four million, two hundred fifty-seven thousand, one hundred sixty-one".