1280553 has 16 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 801920.

The previous prime is 1280549. The next prime is 1280561. The reversal of 1280553 is 3550821.

It is a cyclic number.

It is not a de Polignac number, because 1280553 - 2² = 1280549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1280453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3388 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^1280553 is an apocalyptic number.

It is an amenable number.

1280553 is a deficient number, since it is larger than the sum of its proper divisors (533847).

1280553 is a wasteful number, since it uses less digits than its factorization.

1280553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1280553 is about 1131.6152172890. The cubic root of 1280553 is about 108.5923385890.

The spelling of 1280553 in words is "one million, two hundred eighty thousand, five hundred fifty-three".