13125530 has 32 divisors (see below), whose sum is σ = 27293760. Its totient is φ = 4491520.

The previous prime is 13125527. The next prime is 13125551. The reversal of 13125530 is 3552131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1640 + ... + 5379.

It is an arithmetic number, because the mean of its divisors is an integer number (852930).

Almost surely, 2^13125530 is an apocalyptic number.

13125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13125530 is an abundant number, since it is smaller than the sum of its proper divisors (14168230).

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

13125530 is a wasteful number, since it uses less digits than its factorization.

13125530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054.

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

The square root of 13125530 is about 3622.9173327582. The cubic root of 13125530 is about 235.8878740560.

Adding to 13125530 its reverse (3552131), we get a palindrome (16677661).

The spelling of 13125530 in words is "thirteen million, one hundred twenty-five thousand, five hundred thirty".