1161297 has 20 divisors (see below), whose sum is σ = 1771440. Its totient is φ = 761076.

The previous prime is 1161289. The next prime is 1161313. The reversal of 1161297 is 7921611.

It is not a de Polignac number, because 1161297 - 2³ = 1161289 is a prime.

It is a super-2 number, since 2×1161297² = 2697221444418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1161297.

It is not an unprimeable number, because it can be changed into a prime (1161217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19654 + ... + 19712.

It is an arithmetic number, because the mean of its divisors is an integer number (88572).

2^1161297 is an apocalyptic number.

It is an amenable number.

1161297 is a deficient number, since it is larger than the sum of its proper divisors (610143).

1161297 is an frugal number, since it uses more digits than its factorization.

1161297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 62 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 1161297 is about 1077.6349103477. The cubic root of 1161297 is about 105.1109032286.

The spelling of 1161297 in words is "one million, one hundred sixty-one thousand, two hundred ninety-seven".