1172201 has 8 divisors (see below), whose sum is σ = 1265544. Its totient is φ = 1081600.

The previous prime is 1172179. The next prime is 1172207. The reversal of 1172201 is 1022711.

It can be written as a sum of positive squares in 4 ways, for example, as 90601 + 1081600 = 301^2 + 1040^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1172201 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 (1172207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (158193).

2^1172201 is an apocalyptic number.

It is an amenable number.

1172201 is a deficient number, since it is larger than the sum of its proper divisors (93343).

1172201 is a wasteful number, since it uses less digits than its factorization.

1172201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 1172201 is about 1082.6823172104. The cubic root of 1172201 is about 105.4388585780.

Adding to 1172201 its reverse (1022711), we get a palindrome (2194912).

The spelling of 1172201 in words is "one million, one hundred seventy-two thousand, two hundred one".