415256243 has 2 divisors, whose sum is σ = 415256244. Its totient is φ = 415256242.

The previous prime is 415256227. The next prime is 415256287. The reversal of 415256243 is 342652514.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 415256243 - 2⁴ = 415256227 is a prime.

It is not a weakly prime, because it can be changed into another prime (415256213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207628121 + 207628122.

It is an arithmetic number, because the mean of its divisors is an integer number (207628122).

Almost surely, 2^415256243 is an apocalyptic number.

415256243 is a deficient number, since it is larger than the sum of its proper divisors (1).

415256243 is an equidigital number, since it uses as much as digits as its factorization.

415256243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 32.

The square root of 415256243 is about 20377.8370540153. The cubic root of 415256243 is about 746.0570811428.

The spelling of 415256243 in words is "four hundred fifteen million, two hundred fifty-six thousand, two hundred forty-three".