287057145 has 16 divisors (see below), whose sum is σ = 466148160. Its totient is φ = 150811584.

The previous prime is 287057083. The next prime is 287057159. The reversal of 287057145 is 541750782.

It is not a de Polignac number, because 287057145 - 2¹⁸ = 286795001 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141810 + ... + 143819.

It is an arithmetic number, because the mean of its divisors is an integer number (29134260).

Almost surely, 2^287057145 is an apocalyptic number.

It is an amenable number.

287057145 is a deficient number, since it is larger than the sum of its proper divisors (179091015).

287057145 is a wasteful number, since it uses less digits than its factorization.

287057145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285704.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 287057145 is about 16942.7608434989. The cubic root of 287057145 is about 659.6640048288.

The spelling of 287057145 in words is "two hundred eighty-seven million, fifty-seven thousand, one hundred forty-five".