135247733 has 8 divisors (see below), whose sum is σ = 143660952. Its totient is φ = 126885376.

The previous prime is 135247729. The next prime is 135247759. The reversal of 135247733 is 337742531.

It can be written as a sum of positive squares in 4 ways, for example, as 3411409 + 131836324 = 1847^2 + 11482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135247733 - 2² = 135247729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135247693 and 135247702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135247703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7160 + ... + 17937.

It is an arithmetic number, because the mean of its divisors is an integer number (17957619).

Almost surely, 2^135247733 is an apocalyptic number.

It is an amenable number.

135247733 is a deficient number, since it is larger than the sum of its proper divisors (8413219).

135247733 is a wasteful number, since it uses less digits than its factorization.

135247733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25431.

The product of its digits is 52920, while the sum is 35.

The square root of 135247733 is about 11629.6058832619. The cubic root of 135247733 is about 513.3063829763.

The spelling of 135247733 in words is "one hundred thirty-five million, two hundred forty-seven thousand, seven hundred thirty-three".