1287084527 has 4 divisors (see below), whose sum is σ = 1292092896. Its totient is φ = 1282076160.

The previous prime is 1287084517. The next prime is 1287084551. The reversal of 1287084527 is 7254807821.

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 1287084527 - 2¹⁴ = 1287068143 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 (1287084517) 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, 2503799 + ... + 2504312.

It is an arithmetic number, because the mean of its divisors is an integer number (323023224).

Almost surely, 2^1287084527 is an apocalyptic number.

1287084527 is a deficient number, since it is larger than the sum of its proper divisors (5008369).

1287084527 is an equidigital number, since it uses as much as digits as its factorization.

1287084527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008368.

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 1287084527 is about 35875.9602937677. The cubic root of 1287084527 is about 1087.7665252765.

The spelling of 1287084527 in words is "one billion, two hundred eighty-seven million, eighty-four thousand, five hundred twenty-seven".