1271455 has 4 divisors (see below), whose sum is σ = 1525752. Its totient is φ = 1017160.

The previous prime is 1271449. The next prime is 1271471. The reversal of 1271455 is 5541721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1271455 - 2⁹ = 1270943 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127141 + ... + 127150.

It is an arithmetic number, because the mean of its divisors is an integer number (381438).

2^1271455 is an apocalyptic number.

1271455 is a deficient number, since it is larger than the sum of its proper divisors (254297).

1271455 is an equidigital number, since it uses as much as digits as its factorization.

1271455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254296.

The product of its digits is 1400, while the sum is 25.

The square root of 1271455 is about 1127.5881340277. The cubic root of 1271455 is about 108.3345535694.

It can be divided in two parts, 12714 and 55, that added together give a square (12769 = 113²).

The spelling of 1271455 in words is "one million, two hundred seventy-one thousand, four hundred fifty-five".