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135545 = 527109
BaseRepresentation
bin100001000101111001
320212221012
4201011321
513314140
62523305
71103114
oct410571
9225835
10135545
1192923
1266535
1349907
143757b
152a265
hex21179

135545 has 4 divisors (see below), whose sum is σ = 162660. Its totient is φ = 108432.

The previous prime is 135533. The next prime is 135559. The reversal of 135545 is 545531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545531 = 777933.

It can be written as a sum of positive squares in 2 ways, for example, as 44944 + 90601 = 212^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 135545 - 212 = 131449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135545.

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, 13550 + ... + 13559.

It is an arithmetic number, because the mean of its divisors is an integer number (40665).

2135545 is an apocalyptic number.

It is an amenable number.

135545 is a deficient number, since it is larger than the sum of its proper divisors (27115).

135545 is an equidigital number, since it uses as much as digits as its factorization.

135545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27114.

The product of its digits is 1500, while the sum is 23.

The square root of 135545 is about 368.1643654674. The cubic root of 135545 is about 51.3682180750.

The spelling of 135545 in words is "one hundred thirty-five thousand, five hundred forty-five".

Divisors: 1 5 27109 135545