164561333 has 4 divisors (see below), whose sum is σ = 166071180. Its totient is φ = 163051488.

The previous prime is 164561321. The next prime is 164561339. The reversal of 164561333 is 333165461.

164561333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 333165461 = 157 ⋅2122073.

It can be written as a sum of positive squares in 2 ways, for example, as 65399569 + 99161764 = 8087^2 + 9958^2 .

It is a cyclic number.

It is not a de Polignac number, because 164561333 - 2⁴ = 164561317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164561333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164561339) 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, 754760 + ... + 754977.

It is an arithmetic number, because the mean of its divisors is an integer number (41517795).

Almost surely, 2^164561333 is an apocalyptic number.

It is an amenable number.

164561333 is a deficient number, since it is larger than the sum of its proper divisors (1509847).

164561333 is a wasteful number, since it uses less digits than its factorization.

164561333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509846.

The product of its digits is 19440, while the sum is 32.

The square root of 164561333 is about 12828.1461248304. The cubic root of 164561333 is about 547.9941625197.

The spelling of 164561333 in words is "one hundred sixty-four million, five hundred sixty-one thousand, three hundred thirty-three".