164140055 has 4 divisors (see below), whose sum is σ = 196968072. Its totient is φ = 131312040.

The previous prime is 164140051. The next prime is 164140057. The reversal of 164140055 is 550041461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 164140055 - 2² = 164140051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164140051) 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, 16414001 + ... + 16414010.

It is an arithmetic number, because the mean of its divisors is an integer number (49242018).

Almost surely, 2^164140055 is an apocalyptic number.

164140055 is a deficient number, since it is larger than the sum of its proper divisors (32828017).

164140055 is an equidigital number, since it uses as much as digits as its factorization.

164140055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32828016.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 164140055 is about 12811.7155369607. The cubic root of 164140055 is about 547.5261401307.

The spelling of 164140055 in words is "one hundred sixty-four million, one hundred forty thousand, fifty-five".