1129550 has 48 divisors (see below), whose sum is σ = 2343600. Its totient is φ = 403200.

The previous prime is 1129523. The next prime is 1129559. The reversal of 1129550 is 559211.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 27530 + ... + 27570.

It is an arithmetic number, because the mean of its divisors is an integer number (48825).

2^1129550 is an apocalyptic number.

1129550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129550 is an abundant number, since it is smaller than the sum of its proper divisors (1214050).

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

1129550 is a wasteful number, since it uses less digits than its factorization.

1129550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 1129550 is about 1062.8028980013. The cubic root of 1129550 is about 104.1442156059.

The spelling of 1129550 in words is "one million, one hundred twenty-nine thousand, five hundred fifty".