135136251 has 12 divisors (see below), whose sum is σ = 195388128. Its totient is φ = 90002544.

The previous prime is 135136249. The next prime is 135136277. The reversal of 135136251 is 152631531.

135136251 is a `hidden beast` number, since 1 + 35 + 1 + 3 + 625 + 1 = 666.

It is not a de Polignac number, because 135136251 - 2¹ = 135136249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135135251) 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 11 ways as a sum of consecutive naturals, for example, 3121 + ... + 16733.

It is an arithmetic number, because the mean of its divisors is an integer number (16282344).

Almost surely, 2^135136251 is an apocalyptic number.

135136251 is a deficient number, since it is larger than the sum of its proper divisors (60251877).

135136251 is a wasteful number, since it uses less digits than its factorization.

135136251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14722 (or 14719 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 135136251 is about 11624.8118694455. The cubic root of 135136251 is about 513.1653081474.

Adding to 135136251 its reverse (152631531), we get a palindrome (287767782).

The spelling of 135136251 in words is "one hundred thirty-five million, one hundred thirty-six thousand, two hundred fifty-one".