287125879 has 4 divisors (see below), whose sum is σ = 287336376. Its totient is φ = 286915384.

The previous prime is 287125873. The next prime is 287125973. The reversal of 287125879 is 978521782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 287125879 - 2³ = 287125871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287125871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103189 + ... + 105934.

It is an arithmetic number, because the mean of its divisors is an integer number (71834094).

Almost surely, 2^287125879 is an apocalyptic number.

287125879 is a deficient number, since it is larger than the sum of its proper divisors (210497).

287125879 is a wasteful number, since it uses less digits than its factorization.

287125879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210496.

The product of its digits is 564480, while the sum is 49.

The square root of 287125879 is about 16944.7891400277. The cubic root of 287125879 is about 659.7166514047.

The spelling of 287125879 in words is "two hundred eighty-seven million, one hundred twenty-five thousand, eight hundred seventy-nine".