165031552 has 32 divisors (see below), whose sum is σ = 375743520. Its totient is φ = 70727424.

The previous prime is 165031501. The next prime is 165031561. The reversal of 165031552 is 255130561.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 165031552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91198 + ... + 92989.

It is an arithmetic number, because the mean of its divisors is an integer number (11741985).

Almost surely, 2^165031552 is an apocalyptic number.

It is an amenable number.

165031552 is an abundant number, since it is smaller than the sum of its proper divisors (210711968).

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

165031552 is an equidigital number, since it uses as much as digits as its factorization.

165031552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184208 (or 184196 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 165031552 is about 12846.4606798916. The cubic root of 165031552 is about 548.5156139476.

Subtracting 165031552 from its reverse (255130561), we obtain a palindrome (90099009).

The spelling of 165031552 in words is "one hundred sixty-five million, thirty-one thousand, five hundred fifty-two".