1081512 has 40 divisors (see below), whose sum is σ = 3031050. Its totient is φ = 360288.

The previous prime is 1081501. The next prime is 1081513. The reversal of 1081512 is 2151801.

It can be written as a sum of positive squares in only one way, i.e., 910116 + 171396 = 954^2 + 414^2 .

It is a super-2 number, since 2×1081512² = 2339336412288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1081513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 187 + ... + 1482.

2^1081512 is an apocalyptic number.

1081512 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 1081512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515525).

1081512 is an abundant number, since it is smaller than the sum of its proper divisors (1949538).

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

1081512 is a wasteful number, since it uses less digits than its factorization.

1081512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1081512 is about 1039.9576914471. The cubic root of 1081512 is about 102.6464138008.

The spelling of 1081512 in words is "one million, eighty-one thousand, five hundred twelve".