13945157 has 2 divisors, whose sum is σ = 13945158. Its totient is φ = 13945156.

The previous prime is 13945121. The next prime is 13945163. The reversal of 13945157 is 75154931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13942756 + 2401 = 3734^2 + 49^2 .

It is a cyclic number.

It is not a de Polignac number, because 13945157 - 2⁸ = 13944901 is a prime.

It is a Chen prime.

It is equal to p₉₀₆₇₉₄ and since 13945157 and 906794 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13645157) 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, 6972578 + 6972579.

It is an arithmetic number, because the mean of its divisors is an integer number (6972579).

Almost surely, 2^13945157 is an apocalyptic number.

It is an amenable number.

13945157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13945157 is an equidigital number, since it uses as much as digits as its factorization.

13945157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 13945157 is about 3734.3214912484. The cubic root of 13945157 is about 240.6991016394.

The spelling of 13945157 in words is "thirteen million, nine hundred forty-five thousand, one hundred fifty-seven".