135513457 has 2 divisors, whose sum is σ = 135513458. Its totient is φ = 135513456.

The previous prime is 135513449. The next prime is 135513479. The reversal of 135513457 is 754315531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135512881 + 576 = 11641^2 + 24^2 .

It is a cyclic number.

It is not a de Polignac number, because 135513457 - 2³ = 135513449 is a prime.

It is not a weakly prime, because it can be changed into another prime (135513407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67756728 + 67756729.

It is an arithmetic number, because the mean of its divisors is an integer number (67756729).

Almost surely, 2^135513457 is an apocalyptic number.

It is an amenable number.

135513457 is a deficient number, since it is larger than the sum of its proper divisors (1).

135513457 is an equidigital number, since it uses as much as digits as its factorization.

135513457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 34.

The square root of 135513457 is about 11641.0247401163. The cubic root of 135513457 is about 513.6423309236.

Adding to 135513457 its reverse (754315531), we get a palindrome (889828988).

The spelling of 135513457 in words is "one hundred thirty-five million, five hundred thirteen thousand, four hundred fifty-seven".