4258781 has 2 divisors, whose sum is σ = 4258782. Its totient is φ = 4258780.

The previous prime is 4258777. The next prime is 4258801. The reversal of 4258781 is 1878524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2592100 + 1666681 = 1610^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 4258781 - 2² = 4258777 is a prime.

It is a super-2 number, since 2×4258781² = 36274431211922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4258081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129390 + 2129391.

It is an arithmetic number, because the mean of its divisors is an integer number (2129391).

Almost surely, 2^4258781 is an apocalyptic number.

It is an amenable number.

4258781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4258781 is an equidigital number, since it uses as much as digits as its factorization.

4258781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 35.

The square root of 4258781 is about 2063.6814192118. The cubic root of 4258781 is about 162.0920703072.

The spelling of 4258781 in words is "four million, two hundred fifty-eight thousand, seven hundred eighty-one".