135036261 has 8 divisors (see below), whose sum is σ = 200053760. Its totient is φ = 90024156.

The previous prime is 135036259. The next prime is 135036263. The reversal of 135036261 is 162630531.

135036261 is a `hidden beast` number, since 1 + 35 + 0 + 3 + 626 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (135036259) and next prime (135036263).

It is not a de Polignac number, because 135036261 - 2¹ = 135036259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5001343 = 135036261 / (1 + 3 + 5 + 0 + 3 + 6 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135036263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500645 + ... + 2500698.

It is an arithmetic number, because the mean of its divisors is an integer number (25006720).

Almost surely, 2^135036261 is an apocalyptic number.

It is an amenable number.

135036261 is a deficient number, since it is larger than the sum of its proper divisors (65017499).

135036261 is an equidigital number, since it uses as much as digits as its factorization.

135036261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001352 (or 5001346 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 135036261 is about 11620.5103588440. The cubic root of 135036261 is about 513.0387098453.

Adding to 135036261 its reverse (162630531), we get a palindrome (297666792).

The spelling of 135036261 in words is "one hundred thirty-five million, thirty-six thousand, two hundred sixty-one".