732161 has 4 divisors (see below), whose sum is σ = 749232. Its totient is φ = 715092.

The previous prime is 732157. The next prime is 732169. The reversal of 732161 is 161237.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 732161 - 2² = 732157 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 732161.

It is not an unprimeable number, because it can be changed into a prime (732169) 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 3 ways as a sum of consecutive naturals, for example, 8471 + ... + 8556.

It is an arithmetic number, because the mean of its divisors is an integer number (187308).

It is a Proth number, since it is equal to 715 ⋅ 2¹⁰ + 1 and 715 < 2¹⁰.

2⁷³²¹⁶¹ is an apocalyptic number.

It is an amenable number.

732161 is a deficient number, since it is larger than the sum of its proper divisors (17071).

732161 is a wasteful number, since it uses less digits than its factorization.

732161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070.

The product of its digits is 252, while the sum is 20.

The square root of 732161 is about 855.6640695974. The cubic root of 732161 is about 90.1298947405.

Adding to 732161 its reverse (161237), we get a palindrome (893398).

The spelling of 732161 in words is "seven hundred thirty-two thousand, one hundred sixty-one".