13381577 has 4 divisors (see below), whose sum is σ = 14598096. Its totient is φ = 12165060.

The previous prime is 13381549. The next prime is 13381597. The reversal of 13381577 is 77518331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13381577 - 2¹⁴ = 13365193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13381507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608243 + ... + 608264.

It is an arithmetic number, because the mean of its divisors is an integer number (3649524).

Almost surely, 2^13381577 is an apocalyptic number.

It is an amenable number.

13381577 is a deficient number, since it is larger than the sum of its proper divisors (1216519).

13381577 is a wasteful number, since it uses less digits than its factorization.

13381577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216518.

The product of its digits is 17640, while the sum is 35.

The square root of 13381577 is about 3658.0837879961. The cubic root of 13381577 is about 237.4118720120.

The spelling of 13381577 in words is "thirteen million, three hundred eighty-one thousand, five hundred seventy-seven".