1129553 has 8 divisors (see below), whose sum is σ = 1197888. Its totient is φ = 1062864.

The previous prime is 1129523. The next prime is 1129559. The reversal of 1129553 is 3559211.

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

It is a cyclic number.

It is not a de Polignac number, because 1129553 - 2⁶ = 1129489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129559) 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, 1175 + ... + 1907.

It is an arithmetic number, because the mean of its divisors is an integer number (149736).

2^1129553 is an apocalyptic number.

It is an amenable number.

1129553 is a deficient number, since it is larger than the sum of its proper divisors (68335).

1129553 is an equidigital number, since it uses as much as digits as its factorization.

1129553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its digits is 1350, while the sum is 26.

The square root of 1129553 is about 1062.8043093627. The cubic root of 1129553 is about 104.1443078056.

The spelling of 1129553 in words is "one million, one hundred twenty-nine thousand, five hundred fifty-three".