165532113 has 8 divisors (see below), whose sum is σ = 245232800. Its totient is φ = 110354724.

The previous prime is 165532067. The next prime is 165532141. The reversal of 165532113 is 311235561.

165532113 is a `hidden beast` number, since 1 + 655 + 3 + 2 + 1 + 1 + 3 = 666.

It is not a de Polignac number, because 165532113 - 2⁶ = 165532049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6130819 = 165532113 / (1 + 6 + 5 + 5 + 3 + 2 + 1 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165532163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3065383 + ... + 3065436.

It is an arithmetic number, because the mean of its divisors is an integer number (30654100).

Almost surely, 2^165532113 is an apocalyptic number.

It is an amenable number.

165532113 is a deficient number, since it is larger than the sum of its proper divisors (79700687).

165532113 is an equidigital number, since it uses as much as digits as its factorization.

165532113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130828 (or 6130822 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 165532113 is about 12865.9283769186. The cubic root of 165532113 is about 549.0696259749.

Adding to 165532113 its reverse (311235561), we get a palindrome (476767674).

The spelling of 165532113 in words is "one hundred sixty-five million, five hundred thirty-two thousand, one hundred thirteen".