1288533 has 4 divisors (see below), whose sum is σ = 1718048. Its totient is φ = 859020.

The previous prime is 1288531. The next prime is 1288541. The reversal of 1288533 is 3358821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3358821 = 3 ⋅1119607.

It is not a de Polignac number, because 1288533 - 2¹ = 1288531 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1288533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214753 + ... + 214758.

It is an arithmetic number, because the mean of its divisors is an integer number (429512).

2^1288533 is an apocalyptic number.

It is an amenable number.

1288533 is a deficient number, since it is larger than the sum of its proper divisors (429515).

1288533 is an equidigital number, since it uses as much as digits as its factorization.

1288533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429514.

The product of its digits is 5760, while the sum is 30.

The square root of 1288533 is about 1135.1356747103. The cubic root of 1288533 is about 108.8174426421.

The spelling of 1288533 in words is "one million, two hundred eighty-eight thousand, five hundred thirty-three".