164210155 has 4 divisors (see below), whose sum is σ = 197052192. Its totient is φ = 131368120.

The previous prime is 164210071. The next prime is 164210171. The reversal of 164210155 is 551012461.

It is a happy number.

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

It is not a de Polignac number, because 164210155 - 2²⁷ = 29992427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16421011 + ... + 16421020.

It is an arithmetic number, because the mean of its divisors is an integer number (49263048).

Almost surely, 2^164210155 is an apocalyptic number.

164210155 is a deficient number, since it is larger than the sum of its proper divisors (32842037).

164210155 is an equidigital number, since it uses as much as digits as its factorization.

164210155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32842036.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 164210155 is about 12814.4510221859. The cubic root of 164210155 is about 547.6040738193.

The spelling of 164210155 in words is "one hundred sixty-four million, two hundred ten thousand, one hundred fifty-five".