4145257 has 2 divisors, whose sum is σ = 4145258. Its totient is φ = 4145256.

The previous prime is 4145213. The next prime is 4145261. The reversal of 4145257 is 7525414.

4145257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 670761 = 1864^2 + 819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4145257 is a prime.

It is not a weakly prime, because it can be changed into another prime (4115257) 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 as a sum of consecutive naturals, namely, 2072628 + 2072629.

It is an arithmetic number, because the mean of its divisors is an integer number (2072629).

Almost surely, 2^4145257 is an apocalyptic number.

It is an amenable number.

4145257 is a deficient number, since it is larger than the sum of its proper divisors (1).

4145257 is an equidigital number, since it uses as much as digits as its factorization.

4145257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 28.

The square root of 4145257 is about 2035.9904223743. The cubic root of 4145257 is about 160.6388132781.

It can be divided in two parts, 414 and 5257, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 4145257 in words is "four million, one hundred forty-five thousand, two hundred fifty-seven".