134935561 has 2 divisors, whose sum is σ = 134935562. Its totient is φ = 134935560.

The previous prime is 134935553. The next prime is 134935573. The reversal of 134935561 is 165539431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129846025 + 5089536 = 11395^2 + 2256^2 .

It is an emirp because it is prime and its reverse (165539431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134935561 - 2³ = 134935553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134935561.

It is not a weakly prime, because it can be changed into another prime (134935061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67467780 + 67467781.

It is an arithmetic number, because the mean of its divisors is an integer number (67467781).

Almost surely, 2^134935561 is an apocalyptic number.

It is an amenable number.

134935561 is a deficient number, since it is larger than the sum of its proper divisors (1).

134935561 is an equidigital number, since it uses as much as digits as its factorization.

134935561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 134935561 is about 11616.1766945928. The cubic root of 134935561 is about 512.9111494277.

The spelling of 134935561 in words is "one hundred thirty-four million, nine hundred thirty-five thousand, five hundred sixty-one".