135601461 has 12 divisors (see below), whose sum is σ = 206177920. Its totient is φ = 85642920.

The previous prime is 135601451. The next prime is 135601463. The reversal of 135601461 is 164106531.

135601461 is a `hidden beast` number, since 13 + 5 + 601 + 46 + 1 = 666.

It is not a de Polignac number, because 135601461 - 2⁵ = 135601429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135601463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396325 + ... + 396666.

Almost surely, 2^135601461 is an apocalyptic number.

It is an amenable number.

135601461 is a deficient number, since it is larger than the sum of its proper divisors (70576459).

135601461 is a wasteful number, since it uses less digits than its factorization.

135601461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793016 (or 793013 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 135601461 is about 11644.8040344181. The cubic root of 135601461 is about 513.7534952788.

Adding to 135601461 its reverse (164106531), we get a palindrome (299707992).

The spelling of 135601461 in words is "one hundred thirty-five million, six hundred one thousand, four hundred sixty-one".