787855241 has 2 divisors, whose sum is σ = 787855242. Its totient is φ = 787855240.

The previous prime is 787855223. The next prime is 787855279. The reversal of 787855241 is 142558787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574081600 + 213773641 = 23960^2 + 14621^2 .

It is a cyclic number.

It is not a de Polignac number, because 787855241 - 2¹⁰ = 787854217 is a prime.

It is not a weakly prime, because it can be changed into another prime (787855291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393927620 + 393927621.

It is an arithmetic number, because the mean of its divisors is an integer number (393927621).

Almost surely, 2^787855241 is an apocalyptic number.

It is an amenable number.

787855241 is a deficient number, since it is larger than the sum of its proper divisors (1).

787855241 is an equidigital number, since it uses as much as digits as its factorization.

787855241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627200, while the sum is 47.

The square root of 787855241 is about 28068.7591638818. The cubic root of 787855241 is about 923.5962114593.

The spelling of 787855241 in words is "seven hundred eighty-seven million, eight hundred fifty-five thousand, two hundred forty-one".