1081573 has 6 divisors (see below), whose sum is σ = 1101734. Its totient is φ = 1061736.

The previous prime is 1081541. The next prime is 1081583. The reversal of 1081573 is 3751801.

It can be written as a sum of positive squares in only one way, i.e., 833569 + 248004 = 913^2 + 498^2 .

It is not a de Polignac number, because 1081573 - 2⁵ = 1081541 is a prime.

It is a Duffinian number.

It is a congruent number.

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 (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6811 + ... + 6967.

2^1081573 is an apocalyptic number.

It is an amenable number.

1081573 is a deficient number, since it is larger than the sum of its proper divisors (20161).

1081573 is an frugal number, since it uses more digits than its factorization.

1081573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1081573 is about 1039.9870191498. The cubic root of 1081573 is about 102.6483436032.

It can be divided in two parts, 108 and 1573, that added together give a square (1681 = 41²).

The spelling of 1081573 in words is "one million, eighty-one thousand, five hundred seventy-three".