160821445 has 8 divisors (see below), whose sum is σ = 204337944. Its totient is φ = 121089024.

The previous prime is 160821431. The next prime is 160821467. The reversal of 160821445 is 544128061.

160821445 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 20493729 + 140327716 = 4527^2 + 11846^2 .

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 160821445 - 2⁵ = 160821413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945924 + ... + 946093.

It is an arithmetic number, because the mean of its divisors is an integer number (25542243).

Almost surely, 2^160821445 is an apocalyptic number.

It is an amenable number.

160821445 is a deficient number, since it is larger than the sum of its proper divisors (43516499).

160821445 is a wasteful number, since it uses less digits than its factorization.

160821445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892039.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 160821445 is about 12681.5395358765. The cubic root of 160821445 is about 543.8109982214.

The spelling of 160821445 in words is "one hundred sixty million, eight hundred twenty-one thousand, four hundred forty-five".