135951751 has 4 divisors (see below), whose sum is σ = 146409592. Its totient is φ = 125493912.

The previous prime is 135951749. The next prime is 135951763. The reversal of 135951751 is 157159531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157159531 = 10499 ⋅14969.

It is a cyclic number.

It is not a de Polignac number, because 135951751 - 2¹ = 135951749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135951751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135951701) 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 3 ways as a sum of consecutive naturals, for example, 5228901 + ... + 5228926.

It is an arithmetic number, because the mean of its divisors is an integer number (36602398).

Almost surely, 2^135951751 is an apocalyptic number.

135951751 is a deficient number, since it is larger than the sum of its proper divisors (10457841).

135951751 is a wasteful number, since it uses less digits than its factorization.

135951751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457840.

The product of its digits is 23625, while the sum is 37.

The square root of 135951751 is about 11659.8349473738. The cubic root of 135951751 is about 514.1954963475.

The spelling of 135951751 in words is "one hundred thirty-five million, nine hundred fifty-one thousand, seven hundred fifty-one".