164123555 has 16 divisors (see below), whose sum is σ = 200309760. Its totient is φ = 129077472.

The previous prime is 164123513. The next prime is 164123567. The reversal of 164123555 is 555321461.

It is a cyclic number.

It is not a de Polignac number, because 164123555 - 2¹⁶ = 164058019 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73262 + ... + 75468.

It is an arithmetic number, because the mean of its divisors is an integer number (12519360).

Almost surely, 2^164123555 is an apocalyptic number.

164123555 is a deficient number, since it is larger than the sum of its proper divisors (36186205).

164123555 is a wasteful number, since it uses less digits than its factorization.

164123555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458.

The product of its digits is 18000, while the sum is 32.

The square root of 164123555 is about 12811.0715789117. The cubic root of 164123555 is about 547.5077930266.

The spelling of 164123555 in words is "one hundred sixty-four million, one hundred twenty-three thousand, five hundred fifty-five".