1159553 has 4 divisors (see below), whose sum is σ = 1227780. Its totient is φ = 1091328.

The previous prime is 1159541. The next prime is 1159577. The reversal of 1159553 is 3559511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 734449 + 425104 = 857^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1159553 - 2⁶ = 1159489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34088 + ... + 34121.

It is an arithmetic number, because the mean of its divisors is an integer number (306945).

2^1159553 is an apocalyptic number.

It is an amenable number.

1159553 is a deficient number, since it is larger than the sum of its proper divisors (68227).

1159553 is an equidigital number, since it uses as much as digits as its factorization.

1159553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68226.

The product of its digits is 3375, while the sum is 29.

The square root of 1159553 is about 1076.8254268915. The cubic root of 1159553 is about 105.0582594298.

The spelling of 1159553 in words is "one million, one hundred fifty-nine thousand, five hundred fifty-three".