135787951 has 6 divisors (see below), whose sum is σ = 147036840. Its totient is φ = 125342568.

The previous prime is 135787943. The next prime is 135787979. The reversal of 135787951 is 159787531.

It is not a de Polignac number, because 135787951 - 2³ = 135787943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135787051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401571 + ... + 401908.

It is an arithmetic number, because the mean of its divisors is an integer number (24506140).

Almost surely, 2^135787951 is an apocalyptic number.

135787951 is a deficient number, since it is larger than the sum of its proper divisors (11248889).

135787951 is an equidigital number, since it uses as much as digits as its factorization.

135787951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803505 (or 803492 counting only the distinct ones).

The product of its digits is 264600, while the sum is 46.

The square root of 135787951 is about 11652.8087172149. The cubic root of 135787951 is about 513.9889057243.

The spelling of 135787951 in words is "one hundred thirty-five million, seven hundred eighty-seven thousand, nine hundred fifty-one".