135412251 has 16 divisors (see below), whose sum is σ = 195076896. Its totient is φ = 83056896.

The previous prime is 135412237. The next prime is 135412283. The reversal of 135412251 is 152214531.

It is a happy number.

It is not a de Polignac number, because 135412251 - 2⁵ = 135412219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135412351) 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 in 15 ways as a sum of consecutive naturals, for example, 6661 + ... + 17753.

It is an arithmetic number, because the mean of its divisors is an integer number (12192306).

Almost surely, 2^135412251 is an apocalyptic number.

135412251 is a deficient number, since it is larger than the sum of its proper divisors (59664645).

135412251 is a wasteful number, since it uses less digits than its factorization.

135412251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11422.

The product of its digits is 1200, while the sum is 24.

The square root of 135412251 is about 11636.6769741194. The cubic root of 135412251 is about 513.5144306316.

Adding to 135412251 its reverse (152214531), we get a palindrome (287626782).

The spelling of 135412251 in words is "one hundred thirty-five million, four hundred twelve thousand, two hundred fifty-one".