164555424 has 144 divisors (see below), whose sum is σ = 515773440. Its totient is φ = 49351680.

The previous prime is 164555401. The next prime is 164555437. The reversal of 164555424 is 424555461.

164555424 is a `hidden beast` number, since 1 + 64 + 55 + 542 + 4 = 666.

164555424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402132 + ... + 402540.

It is an arithmetic number, because the mean of its divisors is an integer number (3581760).

Almost surely, 2^164555424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164555424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257886720).

164555424 is an abundant number, since it is smaller than the sum of its proper divisors (351218016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164555424 is a wasteful number, since it uses less digits than its factorization.

164555424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 552 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 164555424 is about 12827.9158088912. The cubic root of 164555424 is about 547.9876033923.

The spelling of 164555424 in words is "one hundred sixty-four million, five hundred fifty-five thousand, four hundred twenty-four".