1121559 has 8 divisors (see below), whose sum is σ = 1504752. Its totient is φ = 743040.

The previous prime is 1121557. The next prime is 1121599. The reversal of 1121559 is 9551211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121559 - 2¹ = 1121557 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562 + ... + 1599.

It is an arithmetic number, because the mean of its divisors is an integer number (188094).

2^1121559 is an apocalyptic number.

1121559 is a deficient number, since it is larger than the sum of its proper divisors (383193).

1121559 is a wasteful number, since it uses less digits than its factorization.

1121559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337.

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

The square root of 1121559 is about 1059.0368265551. The cubic root of 1121559 is about 103.8980448059.

The spelling of 1121559 in words is "one million, one hundred twenty-one thousand, five hundred fifty-nine".