165798452 has 24 divisors (see below), whose sum is σ = 301077000. Its totient is φ = 79794176.

The previous prime is 165798449. The next prime is 165798461. The reversal of 165798452 is 254897561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8145316 + 157653136 = 2854^2 + 12556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165798397 and 165798406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38924 + ... + 42972.

It is an arithmetic number, because the mean of its divisors is an integer number (12544875).

Almost surely, 2^165798452 is an apocalyptic number.

It is an amenable number.

165798452 is a deficient number, since it is larger than the sum of its proper divisors (135278548).

165798452 is a wasteful number, since it uses less digits than its factorization.

165798452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435 (or 4433 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 165798452 is about 12876.2747718430. The cubic root of 165798452 is about 549.3639501204.

The spelling of 165798452 in words is "one hundred sixty-five million, seven hundred ninety-eight thousand, four hundred fifty-two".