164770555 has 4 divisors (see below), whose sum is σ = 197724672. Its totient is φ = 131816440.

The previous prime is 164770553. The next prime is 164770561. The reversal of 164770555 is 555077461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555077461 = 317 ⋅1751033.

It is not a de Polignac number, because 164770555 - 2¹ = 164770553 is a prime.

It is a super-3 number, since 3×164770555³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164770553) 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, 16477051 + ... + 16477060.

It is an arithmetic number, because the mean of its divisors is an integer number (49431168).

Almost surely, 2^164770555 is an apocalyptic number.

164770555 is a deficient number, since it is larger than the sum of its proper divisors (32954117).

164770555 is an equidigital number, since it uses as much as digits as its factorization.

164770555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32954116.

The product of its (nonzero) digits is 147000, while the sum is 40.

The square root of 164770555 is about 12836.2983371375. The cubic root of 164770555 is about 548.2263026737.

The spelling of 164770555 in words is "one hundred sixty-four million, seven hundred seventy thousand, five hundred fifty-five".