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165525 = 3522207
BaseRepresentation
bin101000011010010101
322102001120
4220122111
520244100
63314153
71256403
oct503225
9272046
10165525
111033a8
127b959
135a459
1444473
15340a0
hex28695

165525 has 12 divisors (see below), whose sum is σ = 273792. Its totient is φ = 88240.

The previous prime is 165523. The next prime is 165527. The reversal of 165525 is 525561.

165525 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165523) and next prime (165527).

It is not a de Polignac number, because 165525 - 21 = 165523 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

165525 is strictly pandigital in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 165495 and 165504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1029 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (22816).

2165525 is an apocalyptic number.

165525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165525 is a deficient number, since it is larger than the sum of its proper divisors (108267).

165525 is a wasteful number, since it uses less digits than its factorization.

165525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2215 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 165525 is about 406.8476373288. The cubic root of 165525 is about 54.9061761261.

Subtracting from 165525 its product of digits (1500), we obtain a square (164025 = 4052).

The spelling of 165525 in words is "one hundred sixty-five thousand, five hundred twenty-five".

Divisors: 1 3 5 15 25 75 2207 6621 11035 33105 55175 165525