1081955 has 16 divisors (see below), whose sum is σ = 1562880. Its totient is φ = 702432.

The previous prime is 1081939. The next prime is 1081979. The reversal of 1081955 is 5591801.

It is a cyclic number.

It is not a de Polignac number, because 1081955 - 2⁴ = 1081939 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (97680).

2^1081955 is an apocalyptic number.

1081955 is a deficient number, since it is larger than the sum of its proper divisors (480925).

1081955 is a wasteful number, since it uses less digits than its factorization.

1081955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1081955 is about 1040.1706590748. The cubic root of 1081955 is about 102.6604269460.

The spelling of 1081955 in words is "one million, eighty-one thousand, nine hundred fifty-five".