1191552 has 64 divisors (see below), whose sum is σ = 3304800. Its totient is φ = 379904.

The previous prime is 1191551. The next prime is 1191559. The reversal of 1191552 is 2551911.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11083 + ... + 11189.

2^1191552 is an apocalyptic number.

1191552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1191552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652400).

1191552 is an abundant number, since it is smaller than the sum of its proper divisors (2113248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1191552 is a wasteful number, since it uses less digits than its factorization.

1191552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 141 counting only the distinct ones).

The product of its digits is 450, while the sum is 24.

The square root of 1191552 is about 1091.5823377098. The cubic root of 1191552 is about 106.0158988849.

The spelling of 1191552 in words is "one million, one hundred ninety-one thousand, five hundred fifty-two".