165143224 has 8 divisors (see below), whose sum is σ = 309643560. Its totient is φ = 82571608.

The previous prime is 165143221. The next prime is 165143227. The reversal of 165143224 is 422341561.

165143224 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165143221) and next prime (165143227).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×165143224² = 54544568866228352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 165143192 and 165143201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165143221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10321444 + ... + 10321459.

It is an arithmetic number, because the mean of its divisors is an integer number (38705445).

Almost surely, 2^165143224 is an apocalyptic number.

It is an amenable number.

165143224 is a deficient number, since it is larger than the sum of its proper divisors (144500336).

165143224 is a wasteful number, since it uses less digits than its factorization.

165143224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20642909 (or 20642905 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 165143224 is about 12850.8063560230. The cubic root of 165143224 is about 548.6393075159.

Adding to 165143224 its reverse (422341561), we get a palindrome (587484785).

The spelling of 165143224 in words is "one hundred sixty-five million, one hundred forty-three thousand, two hundred twenty-four".