164312501 has 4 divisors (see below), whose sum is σ = 165907872. Its totient is φ = 162717132.

The previous prime is 164312441. The next prime is 164312539. The reversal of 164312501 is 105213461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164312501 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 (164312201) 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, 797531 + ... + 797736.

It is an arithmetic number, because the mean of its divisors is an integer number (41476968).

Almost surely, 2^164312501 is an apocalyptic number.

It is an amenable number.

164312501 is a deficient number, since it is larger than the sum of its proper divisors (1595371).

164312501 is a wasteful number, since it uses less digits than its factorization.

164312501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595370.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 164312501 is about 12818.4437823006. The cubic root of 164312501 is about 547.7178171846.

Adding to 164312501 its reverse (105213461), we get a palindrome (269525962).

The spelling of 164312501 in words is "one hundred sixty-four million, three hundred twelve thousand, five hundred one".