135504641 has 2 divisors, whose sum is σ = 135504642. Its totient is φ = 135504640.

The previous prime is 135504601. The next prime is 135504643. The reversal of 135504641 is 146405531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117831025 + 17673616 = 10855^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 135504641 - 2²² = 131310337 is a prime.

Together with 135504643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135504643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67752320 + 67752321.

It is an arithmetic number, because the mean of its divisors is an integer number (67752321).

Almost surely, 2^135504641 is an apocalyptic number.

It is an amenable number.

135504641 is a deficient number, since it is larger than the sum of its proper divisors (1).

135504641 is an equidigital number, since it uses as much as digits as its factorization.

135504641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 135504641 is about 11640.6460731353. The cubic root of 135504641 is about 513.6311921307.

The spelling of 135504641 in words is "one hundred thirty-five million, five hundred four thousand, six hundred forty-one".