1275155 has 8 divisors (see below), whose sum is σ = 1748832. Its totient is φ = 874368.

The previous prime is 1275133. The next prime is 1275173. The reversal of 1275155 is 5515721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1275155 - 2⁸ = 1274899 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 18182 + ... + 18251.

It is an arithmetic number, because the mean of its divisors is an integer number (218604).

2^1275155 is an apocalyptic number.

1275155 is a deficient number, since it is larger than the sum of its proper divisors (473677).

1275155 is an equidigital number, since it uses as much as digits as its factorization.

1275155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36445.

The product of its digits is 1750, while the sum is 26.

The square root of 1275155 is about 1129.2276121314. The cubic root of 1275155 is about 108.4395381883.

The spelling of 1275155 in words is "one million, two hundred seventy-five thousand, one hundred fifty-five".