13645157 has 2 divisors, whose sum is σ = 13645158. Its totient is φ = 13645156.

The previous prime is 13645127. The next prime is 13645171. The reversal of 13645157 is 75154631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8844676 + 4800481 = 2974^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 13645157 - 2¹⁰ = 13644133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13645127) by changing a digit.

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 as a sum of consecutive naturals, namely, 6822578 + 6822579.

It is an arithmetic number, because the mean of its divisors is an integer number (6822579).

Almost surely, 2^13645157 is an apocalyptic number.

It is an amenable number.

13645157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13645157 is an equidigital number, since it uses as much as digits as its factorization.

13645157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 13645157 is about 3693.9351645637. The cubic root of 13645157 is about 238.9605333897.

Adding to 13645157 its reverse (75154631), we get a palindrome (88799788).

The spelling of 13645157 in words is "thirteen million, six hundred forty-five thousand, one hundred fifty-seven".