1195591 has 4 divisors (see below), whose sum is σ = 1197784. Its totient is φ = 1193400.

The previous prime is 1195589. The next prime is 1195669. The reversal of 1195591 is 1955911.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1955911 = 1051 ⋅1861.

It is a cyclic number.

It is not a de Polignac number, because 1195591 - 2¹ = 1195589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1195501) 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 3 ways as a sum of consecutive naturals, for example, 436 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (299446).

2^1195591 is an apocalyptic number.

1195591 is a deficient number, since it is larger than the sum of its proper divisors (2193).

1195591 is a wasteful number, since it uses less digits than its factorization.

1195591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192.

The product of its digits is 2025, while the sum is 31.

The square root of 1195591 is about 1093.4308391480. The cubic root of 1195591 is about 106.1355510428.

It can be divided in two parts, 11 and 95591, that multiplied together give a palindrome (1051501).

The spelling of 1195591 in words is "one million, one hundred ninety-five thousand, five hundred ninety-one".