287522141 has 2 divisors, whose sum is σ = 287522142. Its totient is φ = 287522140.

The previous prime is 287522119. The next prime is 287522143. The reversal of 287522141 is 141225782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267976900 + 19545241 = 16370^2 + 4421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-287522141 is a prime.

Together with 287522143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 287522098 and 287522107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287522143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143761070 + 143761071.

It is an arithmetic number, because the mean of its divisors is an integer number (143761071).

Almost surely, 2^287522141 is an apocalyptic number.

It is an amenable number.

287522141 is a deficient number, since it is larger than the sum of its proper divisors (1).

287522141 is an equidigital number, since it uses as much as digits as its factorization.

287522141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 287522141 is about 16956.4778477135. The cubic root of 287522141 is about 660.0200032199.

The spelling of 287522141 in words is "two hundred eighty-seven million, five hundred twenty-two thousand, one hundred forty-one".