287045047 has 4 divisors (see below), whose sum is σ = 287417160. Its totient is φ = 286672936.

The previous prime is 287045041. The next prime is 287045053. The reversal of 287045047 is 740540782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740540782 = 2 ⋅370270391.

It is an interprime number because it is at equal distance from previous prime (287045041) and next prime (287045053).

It is a cyclic number.

It is not a de Polignac number, because 287045047 - 2³ = 287045039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 287044997 and 287045015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287045041) 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, 184897 + ... + 186442.

It is an arithmetic number, because the mean of its divisors is an integer number (71854290).

Almost surely, 2^287045047 is an apocalyptic number.

287045047 is a deficient number, since it is larger than the sum of its proper divisors (372113).

287045047 is an equidigital number, since it uses as much as digits as its factorization.

287045047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372112.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 287045047 is about 16942.4038140991. The cubic root of 287045047 is about 659.6547375367.

The spelling of 287045047 in words is "two hundred eighty-seven million, forty-five thousand, forty-seven".