1155252 has 48 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 310272.

The previous prime is 1155247. The next prime is 1155263. The reversal of 1155252 is 2525511.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1024 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^1155252 is an apocalyptic number.

1155252 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 1155252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632960).

1155252 is an abundant number, since it is smaller than the sum of its proper divisors (2110668).

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

1155252 is a wasteful number, since it uses less digits than its factorization.

1155252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its digits is 500, while the sum is 21.

The square root of 1155252 is about 1074.8264976265. The cubic root of 1155252 is about 104.9282048886.

The spelling of 1155252 in words is "one million, one hundred fifty-five thousand, two hundred fifty-two".