164105057 has 4 divisors (see below), whose sum is σ = 164130816. Its totient is φ = 164079300.

The previous prime is 164105047. The next prime is 164105107. The reversal of 164105057 is 750501461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 164105057 - 2¹⁰ = 164104033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164105047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448 + ... + 18654.

It is an arithmetic number, because the mean of its divisors is an integer number (41032704).

Almost surely, 2^164105057 is an apocalyptic number.

It is an amenable number.

164105057 is a deficient number, since it is larger than the sum of its proper divisors (25759).

164105057 is a wasteful number, since it uses less digits than its factorization.

164105057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25758.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 164105057 is about 12810.3496049093. The cubic root of 164105057 is about 547.4872227928.

The spelling of 164105057 in words is "one hundred sixty-four million, one hundred five thousand, fifty-seven".