135051251 has 2 divisors, whose sum is σ = 135051252. Its totient is φ = 135051250.

The previous prime is 135051233. The next prime is 135051271. The reversal of 135051251 is 152150531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135051251 is a prime.

It is not a weakly prime, because it can be changed into another prime (135051271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67525625 + 67525626.

It is an arithmetic number, because the mean of its divisors is an integer number (67525626).

Almost surely, 2^135051251 is an apocalyptic number.

135051251 is a deficient number, since it is larger than the sum of its proper divisors (1).

135051251 is an equidigital number, since it uses as much as digits as its factorization.

135051251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 135051251 is about 11621.1553212234. The cubic root of 135051251 is about 513.0576928100.

The spelling of 135051251 in words is "one hundred thirty-five million, fifty-one thousand, two hundred fifty-one".