1271151 has 12 divisors (see below), whose sum is σ = 2098512. Its totient is φ = 726336.

The previous prime is 1271147. The next prime is 1271161. The reversal of 1271151 is 1511721.

It is a happy number.

It is not a de Polignac number, because 1271151 - 2² = 1271147 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271111) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10026 + ... + 10151.

It is an arithmetic number, because the mean of its divisors is an integer number (174876).

2^1271151 is an apocalyptic number.

1271151 is a deficient number, since it is larger than the sum of its proper divisors (827361).

1271151 is a wasteful number, since it uses less digits than its factorization.

1271151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190 (or 20187 counting only the distinct ones).

The product of its digits is 70, while the sum is 18.

The square root of 1271151 is about 1127.4533249762. The cubic root of 1271151 is about 108.3259187562.

Adding to 1271151 its reverse (1511721), we get a palindrome (2782872).

The spelling of 1271151 in words is "one million, two hundred seventy-one thousand, one hundred fifty-one".