164111533 has 4 divisors (see below), whose sum is σ = 166801948. Its totient is φ = 161421120.

The previous prime is 164111513. The next prime is 164111537. The reversal of 164111533 is 335111461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335111461 = 2141 ⋅156521.

It can be written as a sum of positive squares in 2 ways, for example, as 66536649 + 97574884 = 8157^2 + 9878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164111533 is a prime.

It is a super-2 number, since 2×164111533² = 53865190527220178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164111498 and 164111507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164111537) 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, 1345116 + ... + 1345237.

It is an arithmetic number, because the mean of its divisors is an integer number (41700487).

Almost surely, 2^164111533 is an apocalyptic number.

It is an amenable number.

164111533 is a deficient number, since it is larger than the sum of its proper divisors (2690415).

164111533 is an equidigital number, since it uses as much as digits as its factorization.

164111533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690414.

The product of its digits is 1080, while the sum is 25.

The square root of 164111533 is about 12810.6023667898. The cubic root of 164111533 is about 547.4944244409.

Adding to 164111533 its reverse (335111461), we get a palindrome (499222994).

The spelling of 164111533 in words is "one hundred sixty-four million, one hundred eleven thousand, five hundred thirty-three".