13571387 has 2 divisors, whose sum is σ = 13571388. Its totient is φ = 13571386.

The previous prime is 13571381. The next prime is 13571401. The reversal of 13571387 is 78317531.

It is a weak prime.

It is an emirp because it is prime and its reverse (78317531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13571387 - 2¹² = 13567291 is a prime.

It is equal to p₈₈₃₉₅₂ and since 13571387 and 883952 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13571381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6785693 + 6785694.

It is an arithmetic number, because the mean of its divisors is an integer number (6785694).

Almost surely, 2^13571387 is an apocalyptic number.

13571387 is a deficient number, since it is larger than the sum of its proper divisors (1).

13571387 is an equidigital number, since it uses as much as digits as its factorization.

13571387 is an evil number, because the sum of its binary digits is even.

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

The square root of 13571387 is about 3683.9363458127. The cubic root of 13571387 is about 238.5291231337.

It can be divided in two parts, 1357 and 1387, that added together give a cube (2744 = 14³).

The spelling of 13571387 in words is "thirteen million, five hundred seventy-one thousand, three hundred eighty-seven".