287573243 has 2 divisors, whose sum is σ = 287573244. Its totient is φ = 287573242.

The previous prime is 287573203. The next prime is 287573249. The reversal of 287573243 is 342375782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 287573243 - 2²⁸ = 19137787 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 287573243.

It is not a weakly prime, because it can be changed into another prime (287573249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143786621 + 143786622.

It is an arithmetic number, because the mean of its divisors is an integer number (143786622).

Almost surely, 2^287573243 is an apocalyptic number.

287573243 is a deficient number, since it is larger than the sum of its proper divisors (1).

287573243 is an equidigital number, since it uses as much as digits as its factorization.

287573243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 41.

The square root of 287573243 is about 16957.9846385117. The cubic root of 287573243 is about 660.0591032165.

The spelling of 287573243 in words is "two hundred eighty-seven million, five hundred seventy-three thousand, two hundred forty-three".