1081506 has 32 divisors (see below), whose sum is σ = 2395008. Its totient is φ = 323840.

The previous prime is 1081501. The next prime is 1081513. The reversal of 1081506 is 6051801.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1081501) 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 15 ways as a sum of consecutive naturals, for example, 2116 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (74844).

2^1081506 is an apocalyptic number.

1081506 is an abundant number, since it is smaller than the sum of its proper divisors (1313502).

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

1081506 is a wasteful number, since it uses less digits than its factorization.

1081506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1081506 is about 1039.9548067104. The cubic root of 1081506 is about 102.6462239802.

The spelling of 1081506 in words is "one million, eighty-one thousand, five hundred six".