Search a number
-
+
115525 = 524621
BaseRepresentation
bin11100001101000101
312212110201
4130031011
512144100
62250501
7660544
oct341505
9185421
10115525
1179883
1256a31
1340777
143015b
152436a
hex1c345

115525 has 6 divisors (see below), whose sum is σ = 143282. Its totient is φ = 92400.

The previous prime is 115523. The next prime is 115547. The reversal of 115525 is 525511.

It can be written as a sum of positive squares in 3 ways, for example, as 3969 + 111556 = 63^2 + 334^2 .

It is not a de Polignac number, because 115525 - 21 = 115523 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2286 + ... + 2335.

2115525 is an apocalyptic number.

It is an amenable number.

115525 is a deficient number, since it is larger than the sum of its proper divisors (27757).

115525 is an equidigital number, since it uses as much as digits as its factorization.

115525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631 (or 4626 counting only the distinct ones).

The product of its digits is 250, while the sum is 19.

The square root of 115525 is about 339.8896879871. The cubic root of 115525 is about 48.7033303087.

The spelling of 115525 in words is "one hundred fifteen thousand, five hundred twenty-five".

Divisors: 1 5 25 4621 23105 115525