160541721 has 24 divisors (see below), whose sum is σ = 236268864. Its totient is φ = 105023520.

The previous prime is 160541713. The next prime is 160541723. The reversal of 160541721 is 127145061.

It is a happy number.

It is not a de Polignac number, because 160541721 - 2³ = 160541713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160541723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176550 + ... + 177456.

It is an arithmetic number, because the mean of its divisors is an integer number (9844536).

Almost surely, 2^160541721 is an apocalyptic number.

It is an amenable number.

160541721 is a deficient number, since it is larger than the sum of its proper divisors (75727143).

160541721 is a wasteful number, since it uses less digits than its factorization.

160541721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 160541721 is about 12670.5059488562. The cubic root of 160541721 is about 543.4955235706.

Adding to 160541721 its reverse (127145061), we get a palindrome (287686782).

The spelling of 160541721 in words is "one hundred sixty million, five hundred forty-one thousand, seven hundred twenty-one".