1255369 has 4 divisors (see below), whose sum is σ = 1260820. Its totient is φ = 1249920.

The previous prime is 1255367. The next prime is 1255391. The reversal of 1255369 is 9635521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9635521 = 7 ⋅1376503.

It can be written as a sum of positive squares in 2 ways, for example, as 1123600 + 131769 = 1060^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255369 - 2¹ = 1255367 is a prime.

It is a super-2 number, since 2×1255369² = 3151902652322, which contains 22 as substring.

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 1255369.

It is not an unprimeable number, because it can be changed into a prime (1255361) 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, 2364 + ... + 2845.

It is an arithmetic number, because the mean of its divisors is an integer number (315205).

2^1255369 is an apocalyptic number.

It is an amenable number.

1255369 is a deficient number, since it is larger than the sum of its proper divisors (5451).

1255369 is an equidigital number, since it uses as much as digits as its factorization.

1255369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450.

The product of its digits is 8100, while the sum is 31.

The square root of 1255369 is about 1120.4325057762. The cubic root of 1255369 is about 107.8757430105.

The spelling of 1255369 in words is "one million, two hundred fifty-five thousand, three hundred sixty-nine".