160521404 has 12 divisors (see below), whose sum is σ = 281113728. Its totient is φ = 80203200.

The previous prime is 160521401. The next prime is 160521407. The reversal of 160521404 is 404125061.

160521404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (160521401) and next prime (160521407).

It is a super-2 number, since 2×160521404² = 51534242284262432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 160521404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160521401) 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, 7757 + ... + 19524.

It is an arithmetic number, because the mean of its divisors is an integer number (23426144).

Almost surely, 2^160521404 is an apocalyptic number.

It is an amenable number.

160521404 is a deficient number, since it is larger than the sum of its proper divisors (120592324).

160521404 is a wasteful number, since it uses less digits than its factorization.

160521404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28756 (or 28754 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 160521404 is about 12669.7041796563. The cubic root of 160521404 is about 543.4725956481.

Adding to 160521404 its reverse (404125061), we get a palindrome (564646465).

The spelling of 160521404 in words is "one hundred sixty million, five hundred twenty-one thousand, four hundred four".