160501661 has 4 divisors (see below), whose sum is σ = 160731324. Its totient is φ = 160272000.

The previous prime is 160501657. The next prime is 160501717. The reversal of 160501661 is 166105061.

160501661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166105061 = 89 ⋅1866349.

It can be written as a sum of positive squares in 2 ways, for example, as 123899161 + 36602500 = 11131^2 + 6050^2 .

It is a cyclic number.

It is not a de Polignac number, because 160501661 - 2² = 160501657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 160501661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160500661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113780 + ... + 115181.

It is an arithmetic number, because the mean of its divisors is an integer number (40182831).

Almost surely, 2^160501661 is an apocalyptic number.

It is an amenable number.

160501661 is a deficient number, since it is larger than the sum of its proper divisors (229663).

160501661 is an equidigital number, since it uses as much as digits as its factorization.

160501661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229662.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 160501661 is about 12668.9250135913. The cubic root of 160501661 is about 543.4503136365.

The spelling of 160501661 in words is "one hundred sixty million, five hundred one thousand, six hundred sixty-one".