1072161 has 6 divisors (see below), whose sum is σ = 1548690. Its totient is φ = 714768.

The previous prime is 1072157. The next prime is 1072163. The reversal of 1072161 is 1612701.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 463761 = 780^2 + 681^2 .

It is not a de Polignac number, because 1072161 - 2² = 1072157 is a prime.

It is a super-2 number, since 2×1072161² = 2299058419842, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1072163) 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, 59556 + ... + 59573.

It is an arithmetic number, because the mean of its divisors is an integer number (258115).

2^1072161 is an apocalyptic number.

It is an amenable number.

1072161 is a deficient number, since it is larger than the sum of its proper divisors (476529).

1072161 is a wasteful number, since it uses less digits than its factorization.

1072161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119135 (or 119132 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1072161 is about 1035.4520751826. The cubic root of 1072161 is about 102.3497222764.

Adding to 1072161 its reverse (1612701), we get a palindrome (2684862).

The spelling of 1072161 in words is "one million, seventy-two thousand, one hundred sixty-one".