160553621 has 8 divisors (see below), whose sum is σ = 162870840. Its totient is φ = 158251968.

The previous prime is 160553531. The next prime is 160553651. The reversal of 160553621 is 126355061.

160553621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 128006596 + 32547025 = 11314^2 + 5705^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 160553621 - 2²² = 156359317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160553651) 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, 17735 + ... + 25211.

It is an arithmetic number, because the mean of its divisors is an integer number (20358855).

Almost surely, 2^160553621 is an apocalyptic number.

It is an amenable number.

160553621 is a deficient number, since it is larger than the sum of its proper divisors (2317219).

160553621 is a wasteful number, since it uses less digits than its factorization.

160553621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 160553621 is about 12670.9755346619. The cubic root of 160553621 is about 543.5089519324.

The spelling of 160553621 in words is "one hundred sixty million, five hundred fifty-three thousand, six hundred twenty-one".