164371523 has 4 divisors (see below), whose sum is σ = 164965200. Its totient is φ = 163777848.

The previous prime is 164371513. The next prime is 164371553. The reversal of 164371523 is 325173461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325173461 = 479 ⋅678859.

It is a cyclic number.

It is not a de Polignac number, because 164371523 - 2¹⁰ = 164370499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164371523.

It is not an unprimeable number, because it can be changed into a prime (164371513) 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, 296423 + ... + 296976.

It is an arithmetic number, because the mean of its divisors is an integer number (41241300).

Almost surely, 2^164371523 is an apocalyptic number.

164371523 is a deficient number, since it is larger than the sum of its proper divisors (593677).

164371523 is an equidigital number, since it uses as much as digits as its factorization.

164371523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593676.

The product of its digits is 15120, while the sum is 32.

The square root of 164371523 is about 12820.7458051394. The cubic root of 164371523 is about 547.7833904690.

The spelling of 164371523 in words is "one hundred sixty-four million, three hundred seventy-one thousand, five hundred twenty-three".