164117555 has 16 divisors (see below), whose sum is σ = 225414144. Its totient is φ = 112368480.

The previous prime is 164117549. The next prime is 164117579. The reversal of 164117555 is 555711461.

It is not a de Polignac number, because 164117555 - 2¹² = 164113459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

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, 22850 + ... + 29160.

It is an arithmetic number, because the mean of its divisors is an integer number (14088384).

Almost surely, 2^164117555 is an apocalyptic number.

164117555 is a deficient number, since it is larger than the sum of its proper divisors (61296589).

164117555 is an equidigital number, since it uses as much as digits as its factorization.

164117555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066.

The product of its digits is 21000, while the sum is 35.

The square root of 164117555 is about 12810.8374043230. The cubic root of 164117555 is about 547.5011210474.

The spelling of 164117555 in words is "one hundred sixty-four million, one hundred seventeen thousand, five hundred fifty-five".