160521621 has 8 divisors (see below), whose sum is σ = 230492640. Its totient is φ = 98782512.

The previous prime is 160521617. The next prime is 160521629. The reversal of 160521621 is 126125061.

160521621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 160521621 - 2² = 160521617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 160521591 and 160521600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160521629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057931 + ... + 2058008.

It is an arithmetic number, because the mean of its divisors is an integer number (28811580).

Almost surely, 2^160521621 is an apocalyptic number.

It is an amenable number.

160521621 is a deficient number, since it is larger than the sum of its proper divisors (69971019).

160521621 is a wasteful number, since it uses less digits than its factorization.

160521621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115955.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 160521621 is about 12669.7127433893. The cubic root of 160521621 is about 543.4728405449.

Adding to 160521621 its reverse (126125061), we get a palindrome (286646682).

The spelling of 160521621 in words is "one hundred sixty million, five hundred twenty-one thousand, six hundred twenty-one".