1271545 has 16 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 907200.

The previous prime is 1271531. The next prime is 1271551. The reversal of 1271545 is 5451721.

It is not a de Polignac number, because 1271545 - 2⁵ = 1271513 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 3166 + ... + 3544.

It is an arithmetic number, because the mean of its divisors is an integer number (106020).

2^1271545 is an apocalyptic number.

It is an amenable number.

1271545 is a deficient number, since it is larger than the sum of its proper divisors (424775).

1271545 is a wasteful number, since it uses less digits than its factorization.

1271545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456.

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

The square root of 1271545 is about 1127.6280415101. The cubic root of 1271545 is about 108.3371096645.

The spelling of 1271545 in words is "one million, two hundred seventy-one thousand, five hundred forty-five".