1361255 has 32 divisors (see below), whose sum is σ = 2073600. Its totient is φ = 836352.

The previous prime is 1361197. The next prime is 1361273. The reversal of 1361255 is 5521631.

It is a cyclic number.

It is not a de Polignac number, because 1361255 - 2²⁰ = 312679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1361255.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 15251 + ... + 15339.

It is an arithmetic number, because the mean of its divisors is an integer number (64800).

2^1361255 is an apocalyptic number.

1361255 is a deficient number, since it is larger than the sum of its proper divisors (712345).

1361255 is a wasteful number, since it uses less digits than its factorization.

1361255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143.

The product of its digits is 900, while the sum is 23.

The square root of 1361255 is about 1166.7283317037. The cubic root of 1361255 is about 110.8272344179.

Adding to 1361255 its reverse (5521631), we get a palindrome (6882886).

It can be divided in two parts, 136125 and 5, that multiplied together give a square (680625 = 825²).

The spelling of 1361255 in words is "one million, three hundred sixty-one thousand, two hundred fifty-five".