1317261 has 16 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 790320.

The previous prime is 1317259. The next prime is 1317271. The reversal of 1317261 is 1627131.

It is not a de Polignac number, because 1317261 - 2¹ = 1317259 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5796 + ... + 6018.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^1317261 is an apocalyptic number.

1317261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1317261 is a deficient number, since it is larger than the sum of its proper divisors (618099).

1317261 is a wasteful number, since it uses less digits than its factorization.

1317261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its digits is 252, while the sum is 21.

The square root of 1317261 is about 1147.7199135678. The cubic root of 1317261 is about 109.6202053518.

The spelling of 1317261 in words is "one million, three hundred seventeen thousand, two hundred sixty-one".