13645057 has 2 divisors, whose sum is σ = 13645058. Its totient is φ = 13645056.

The previous prime is 13645043. The next prime is 13645127. The reversal of 13645057 is 75054631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 1527696 = 3481^2 + 1236^2 .

It is an emirp because it is prime and its reverse (75054631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13645057 - 2¹⁵ = 13612289 is a prime.

It is not a weakly prime, because it can be changed into another prime (13645157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822528 + 6822529.

It is an arithmetic number, because the mean of its divisors is an integer number (6822529).

Almost surely, 2^13645057 is an apocalyptic number.

It is an amenable number.

13645057 is a deficient number, since it is larger than the sum of its proper divisors (1).

13645057 is an equidigital number, since it uses as much as digits as its factorization.

13645057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 13645057 is about 3693.9216288384. The cubic root of 13645057 is about 238.9599496389.

Adding to 13645057 its reverse (75054631), we get a palindrome (88699688).

The spelling of 13645057 in words is "thirteen million, six hundred forty-five thousand, fifty-seven".