1971073 has 16 divisors (see below), whose sum is σ = 2254336. Its totient is φ = 1710720.

The previous prime is 1971049. The next prime is 1971091. The reversal of 1971073 is 3701791.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1971073 - 2¹³ = 1962881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1971023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26965 + ... + 27037.

It is an arithmetic number, because the mean of its divisors is an integer number (140896).

2^1971073 is an apocalyptic number.

1971073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1971073 is a deficient number, since it is larger than the sum of its proper divisors (283263).

1971073 is a wasteful number, since it uses less digits than its factorization.

1971073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 1971073 is about 1403.9490731504. The cubic root of 1971073 is about 125.3817237757.

The spelling of 1971073 in words is "one million, nine hundred seventy-one thousand, seventy-three".