1287053547 has 16 divisors (see below), whose sum is σ = 1898027040. Its totient is φ = 770625792.

The previous prime is 1287053489. The next prime is 1287053557. The reversal of 1287053547 is 7453507821.

It is not a de Polignac number, because 1287053547 - 2¹¹ = 1287051499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1287053499 and 1287053508.

It is not an unprimeable number, because it can be changed into a prime (1287053557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444522 + ... + 447407.

It is an arithmetic number, because the mean of its divisors is an integer number (118626690).

Almost surely, 2^1287053547 is an apocalyptic number.

1287053547 is a deficient number, since it is larger than the sum of its proper divisors (610973493).

1287053547 is a wasteful number, since it uses less digits than its factorization.

1287053547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891982.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 1287053547 is about 35875.5285257235. The cubic root of 1287053547 is about 1087.7577977281.

The spelling of 1287053547 in words is "one billion, two hundred eighty-seven million, fifty-three thousand, five hundred forty-seven".