1197561 has 16 divisors (see below), whose sum is σ = 1679360. Its totient is φ = 758160.

The previous prime is 1197527. The next prime is 1197571. The reversal of 1197561 is 1657911.

It is not a de Polignac number, because 1197561 - 2⁷ = 1197433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7266 + ... + 7428.

It is an arithmetic number, because the mean of its divisors is an integer number (104960).

2^1197561 is an apocalyptic number.

It is an amenable number.

1197561 is a deficient number, since it is larger than the sum of its proper divisors (481799).

1197561 is a wasteful number, since it uses less digits than its factorization.

1197561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its digits is 1890, while the sum is 30.

The square root of 1197561 is about 1094.3313026684. The cubic root of 1197561 is about 106.1938129684.

The spelling of 1197561 in words is "one million, one hundred ninety-seven thousand, five hundred sixty-one".