13251530 has 16 divisors (see below), whose sum is σ = 23927400. Its totient is φ = 5284032.

The previous prime is 13251529. The next prime is 13251533. The reversal of 13251530 is 3515231.

13251530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8048569 + 5202961 = 2837^2 + 2281^2 .

It is not an unprimeable number, because it can be changed into a prime (13251533) 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, 1592 + ... + 5388.

Almost surely, 2^13251530 is an apocalyptic number.

13251530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13251530 is a deficient number, since it is larger than the sum of its proper divisors (10675870).

13251530 is a wasteful number, since it uses less digits than its factorization.

13251530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13251530 is about 3640.2651002365. The cubic root of 13251530 is about 236.6402822755.

Adding to 13251530 its reverse (3515231), we get a palindrome (16766761).

The spelling of 13251530 in words is "thirteen million, two hundred fifty-one thousand, five hundred thirty".