164537 has 4 divisors (see below), whose sum is σ = 165876. Its totient is φ = 163200.

The previous prime is 164531. The next prime is 164569. The reversal of 164537 is 735461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32041 + 132496 = 179^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 164537 - 2¹² = 160441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164531) 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, 464 + ... + 737.

It is an arithmetic number, because the mean of its divisors is an integer number (41469).

2¹⁶⁴⁵³⁷ is an apocalyptic number.

It is an amenable number.

164537 is a deficient number, since it is larger than the sum of its proper divisors (1339).

164537 is a wasteful number, since it uses less digits than its factorization.

164537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338.

The product of its digits is 2520, while the sum is 26.

The square root of 164537 is about 405.6316062636. The cubic root of 164537 is about 54.7967151316.

Adding to 164537 its reverse (735461), we get a palindrome (899998).

The spelling of 164537 in words is "one hundred sixty-four thousand, five hundred thirty-seven".