13125587 has 4 divisors (see below), whose sum is σ = 13154400. Its totient is φ = 13096776.

The previous prime is 13125569. The next prime is 13125611. The reversal of 13125587 is 78552131.

13125587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13125587 - 2¹⁴ = 13109203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13125527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13712 + ... + 14637.

It is an arithmetic number, because the mean of its divisors is an integer number (3288600).

Almost surely, 2^13125587 is an apocalyptic number.

13125587 is a deficient number, since it is larger than the sum of its proper divisors (28813).

13125587 is an equidigital number, since it uses as much as digits as its factorization.

13125587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28812.

The product of its digits is 8400, while the sum is 32.

The square root of 13125587 is about 3622.9251993382. The cubic root of 13125587 is about 235.8882155175. Note that the first 3 decimals are identical.

The spelling of 13125587 in words is "thirteen million, one hundred twenty-five thousand, five hundred eighty-seven".