135171401 has 2 divisors, whose sum is σ = 135171402. Its totient is φ = 135171400.

The previous prime is 135171373. The next prime is 135171451. The reversal of 135171401 is 104171531.

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., 107661376 + 27510025 = 10376^2 + 5245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135171401 is a prime.

It is not a weakly prime, because it can be changed into another prime (135171451) 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, 67585700 + 67585701.

It is an arithmetic number, because the mean of its divisors is an integer number (67585701).

Almost surely, 2^135171401 is an apocalyptic number.

It is an amenable number.

135171401 is a deficient number, since it is larger than the sum of its proper divisors (1).

135171401 is an equidigital number, since it uses as much as digits as its factorization.

135171401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 135171401 is about 11626.3236235708. The cubic root of 135171401 is about 513.2097970657.

The spelling of 135171401 in words is "one hundred thirty-five million, one hundred seventy-one thousand, four hundred one".