135510409 has 2 divisors, whose sum is σ = 135510410. Its totient is φ = 135510408.

The previous prime is 135510373. The next prime is 135510437. The reversal of 135510409 is 904015531.

It is an a-pointer prime, because the next prime (135510437) can be obtained adding 135510409 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126630009 + 8880400 = 11253^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 135510409 - 2²¹ = 133413257 is a prime.

It is not a weakly prime, because it can be changed into another prime (135510499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67755204 + 67755205.

It is an arithmetic number, because the mean of its divisors is an integer number (67755205).

Almost surely, 2^135510409 is an apocalyptic number.

It is an amenable number.

135510409 is a deficient number, since it is larger than the sum of its proper divisors (1).

135510409 is an equidigital number, since it uses as much as digits as its factorization.

135510409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 135510409 is about 11640.8938230705. The cubic root of 135510409 is about 513.6384799074.

The spelling of 135510409 in words is "one hundred thirty-five million, five hundred ten thousand, four hundred nine".