165644052 has 48 divisors (see below), whose sum is σ = 464970240. Its totient is φ = 44835552.

The previous prime is 165644047. The next prime is 165644057. The reversal of 165644052 is 250446561.

It is an interprime number because it is at equal distance from previous prime (165644047) and next prime (165644057).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165644057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50298 + ... + 53489.

It is an arithmetic number, because the mean of its divisors is an integer number (9686880).

Almost surely, 2^165644052 is an apocalyptic number.

165644052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165644052 is an abundant number, since it is smaller than the sum of its proper divisors (299326188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165644052 is a wasteful number, since it uses less digits than its factorization.

165644052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103820 (or 103818 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 165644052 is about 12870.2778524786. The cubic root of 165644052 is about 549.1933652192.

The spelling of 165644052 in words is "one hundred sixty-five million, six hundred forty-four thousand, fifty-two".