287042897 has 2 divisors, whose sum is σ = 287042898. Its totient is φ = 287042896.

The previous prime is 287042893. The next prime is 287042933. The reversal of 287042897 is 798240782.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220195921 + 66846976 = 14839^2 + 8176^2 .

It is a cyclic number.

It is not a de Polignac number, because 287042897 - 2² = 287042893 is a prime.

It is not a weakly prime, because it can be changed into another prime (287042891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143521448 + 143521449.

It is an arithmetic number, because the mean of its divisors is an integer number (143521449).

Almost surely, 2^287042897 is an apocalyptic number.

It is an amenable number.

287042897 is a deficient number, since it is larger than the sum of its proper divisors (1).

287042897 is an equidigital number, since it uses as much as digits as its factorization.

287042897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 287042897 is about 16942.3403637160. The cubic root of 287042897 is about 659.6530905696.

The spelling of 287042897 in words is "two hundred eighty-seven million, forty-two thousand, eight hundred ninety-seven".