161753 has 2 divisors, whose sum is σ = 161754. Its totient is φ = 161752.

The previous prime is 161743. The next prime is 161761. The reversal of 161753 is 357161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110224 + 51529 = 332^2 + 227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (161743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80876 + 80877.

It is an arithmetic number, because the mean of its divisors is an integer number (80877).

2¹⁶¹⁷⁵³ is an apocalyptic number.

It is an amenable number.

161753 is a deficient number, since it is larger than the sum of its proper divisors (1).

161753 is an equidigital number, since it uses as much as digits as its factorization.

161753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 23.

The square root of 161753 is about 402.1852806854. The cubic root of 161753 is about 54.4858982116.

The spelling of 161753 in words is "one hundred sixty-one thousand, seven hundred fifty-three".