135517471 has 2 divisors, whose sum is σ = 135517472. Its totient is φ = 135517470.

The previous prime is 135517463. The next prime is 135517477. The reversal of 135517471 is 174715531.

It is a happy number.

135517471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135517471 - 2³ = 135517463 is a prime.

It is a super-3 number, since 3×135517471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135517477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67758735 + 67758736.

It is an arithmetic number, because the mean of its divisors is an integer number (67758736).

Almost surely, 2^135517471 is an apocalyptic number.

135517471 is a deficient number, since it is larger than the sum of its proper divisors (1).

135517471 is an equidigital number, since it uses as much as digits as its factorization.

135517471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14700, while the sum is 34.

The square root of 135517471 is about 11641.1971463420. The cubic root of 135517471 is about 513.6474023509.

The spelling of 135517471 in words is "one hundred thirty-five million, five hundred seventeen thousand, four hundred seventy-one".