1089522252 has 180 divisors, whose sum is σ = 3568783680. Its totient is φ = 287292096.

The previous prime is 1089522251. The next prime is 1089522271. The reversal of 1089522252 is 2522259801.

1089522252 is a `hidden beast` number, since 1 + 0 + 89 + 522 + 2 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1089522251) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 203749 + ... + 209027.

It is an arithmetic number, because the mean of its divisors is an integer number (19826576).

Almost surely, 2^1089522252 is an apocalyptic number.

1089522252 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 1089522252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1784391840).

1089522252 is an abundant number, since it is smaller than the sum of its proper divisors (2479261428).

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

1089522252 is a wasteful number, since it uses less digits than its factorization.

1089522252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322 (or 5304 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1089522252 is about 33007.9119606194. The cubic root of 1089522252 is about 1028.9920865697.

The spelling of 1089522252 in words is "one billion, eighty-nine million, five hundred twenty-two thousand, two hundred fifty-two".