4255997 has 2 divisors, whose sum is σ = 4255998. Its totient is φ = 4255996.

The previous prime is 4255987. The next prime is 4256003. The reversal of 4255997 is 7995524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4104676 + 151321 = 2026^2 + 389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4255997 is a prime.

It is a super-2 number, since 2×4255997² = 36227020928018, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁵ + 5 + 5³ + 9² + 9⁵ + 7⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4255987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2127998 + 2127999.

It is an arithmetic number, because the mean of its divisors is an integer number (2127999).

Almost surely, 2^4255997 is an apocalyptic number.

It is an amenable number.

4255997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4255997 is an equidigital number, since it uses as much as digits as its factorization.

4255997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 4255997 is about 2063.0067862225. The cubic root of 4255997 is about 162.0567423036.

The spelling of 4255997 in words is "four million, two hundred fifty-five thousand, nine hundred ninety-seven".