1167561 has 16 divisors (see below), whose sum is σ = 1753920. Its totient is φ = 767520.

The previous prime is 1167559. The next prime is 1167571. The reversal of 1167561 is 1657611.

It is not a de Polignac number, because 1167561 - 2¹ = 1167559 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1167571) 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, 1981 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (109620).

2^1167561 is an apocalyptic number.

It is an amenable number.

1167561 is a deficient number, since it is larger than the sum of its proper divisors (586359).

1167561 is an equidigital number, since it uses as much as digits as its factorization.

1167561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 607 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1167561 is about 1080.5373663136. The cubic root of 1167561 is about 105.2995527615.

It can be divided in two parts, 1167 and 561, that added together give a cube (1728 = 12³).

The spelling of 1167561 in words is "one million, one hundred sixty-seven thousand, five hundred sixty-one".