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2530 = 251123
BaseRepresentation
bin100111100010
310110201
4213202
540110
615414
710243
oct4742
93421
102530
1119a0
12156a
1311c8
14cca
15b3a
hex9e2

2530 has 16 divisors (see below), whose sum is σ = 5184. Its totient is φ = 880.

The previous prime is 2521. The next prime is 2531. The reversal of 2530 is 352.

2530 divided by its sum of digits (10) gives a triangular number (253 = T22).

Subtracting from 2530 its product of nonzero digits (30), we obtain a square (2500 = 502).

Adding to 2530 its reverse (352), we get a palindrome (2882).

It can be divided in two parts, 25 and 30, that added together give a palindrome (55).

2530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a Leyland number of the form 73 + 37.

It is a plaindrome in base 12.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531) by changing a digit.

2530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99 + ... + 121.

It is an arithmetic number, because the mean of its divisors is an integer number (324).

22530 is an apocalyptic number.

2530 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592).

2530 is a wasteful number, since it uses less digits than its factorization.

2530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41.

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 2530 is about 50.2991053598. The cubic root of 2530 is about 13.6261607181.

The spelling of 2530 in words is "two thousand, five hundred thirty".

Divisors: 1 2 5 10 11 22 23 46 55 110 115 230 253 506 1265 2530