165243452 has 24 divisors (see below), whose sum is σ = 319016880. Its totient is φ = 74264960.

The previous prime is 165243427. The next prime is 165243461. The reversal of 165243452 is 254342561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17183 + ... + 25014.

It is an arithmetic number, because the mean of its divisors is an integer number (13292370).

Almost surely, 2^165243452 is an apocalyptic number.

It is an amenable number.

165243452 is a deficient number, since it is larger than the sum of its proper divisors (153773428).

165243452 is a wasteful number, since it uses less digits than its factorization.

165243452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42301 (or 42299 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 165243452 is about 12854.7054419773. The cubic root of 165243452 is about 548.7502776551.

The spelling of 165243452 in words is "one hundred sixty-five million, two hundred forty-three thousand, four hundred fifty-two".