135891527 has 2 divisors, whose sum is σ = 135891528. Its totient is φ = 135891526.

The previous prime is 135891451. The next prime is 135891541. The reversal of 135891527 is 725198531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135891527 - 2⁸ = 135891271 is a prime.

It is a super-2 number, since 2×135891527² = 36933014220783458, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135891127) 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, 67945763 + 67945764.

It is an arithmetic number, because the mean of its divisors is an integer number (67945764).

Almost surely, 2^135891527 is an apocalyptic number.

135891527 is a deficient number, since it is larger than the sum of its proper divisors (1).

135891527 is an equidigital number, since it uses as much as digits as its factorization.

135891527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 41.

The square root of 135891527 is about 11657.2521204613. The cubic root of 135891527 is about 514.1195589088.

The spelling of 135891527 in words is "one hundred thirty-five million, eight hundred ninety-one thousand, five hundred twenty-seven".