1168561 has 9 divisors (see below), whose sum is σ = 1248121. Its totient is φ = 1093972.

The previous prime is 1168553. The next prime is 1168619. The reversal of 1168561 is 1658611.

1168561 = 1³ + 2³ + ... + 46³.

The square root of 1168561 is 1081.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1168561 - 2³ = 1168553 is a prime.

It is an Ulam number.

It is a Duffinian number.

1168561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1168501) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24840 + ... + 24886.

2^1168561 is an apocalyptic number.

1168561 is the 1081-st square number.

1168561 is the 541-st centered octagonal number.

It is an amenable number.

1168561 is a deficient number, since it is larger than the sum of its proper divisors (79560).

1168561 is an frugal number, since it uses more digits than its factorization.

1168561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 70 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The cubic root of 1168561 is about 105.3296067243.

The spelling of 1168561 in words is "one million, one hundred sixty-eight thousand, five hundred sixty-one".