135252797 has 4 divisors (see below), whose sum is σ = 138908316. Its totient is φ = 131597280.

The previous prime is 135252787. The next prime is 135252829. The reversal of 135252797 is 797252531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797252531 = 857 ⋅930283.

It can be written as a sum of positive squares in 2 ways, for example, as 62900761 + 72352036 = 7931^2 + 8506^2 .

It is a cyclic number.

It is not a de Polignac number, because 135252797 - 2²⁰ = 134204221 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 (135252707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1827704 + ... + 1827777.

It is an arithmetic number, because the mean of its divisors is an integer number (34727079).

Almost surely, 2^135252797 is an apocalyptic number.

It is an amenable number.

135252797 is a deficient number, since it is larger than the sum of its proper divisors (3655519).

135252797 is an equidigital number, since it uses as much as digits as its factorization.

135252797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655518.

The product of its digits is 132300, while the sum is 41.

The square root of 135252797 is about 11629.8236014137. The cubic root of 135252797 is about 513.3127893710.

The spelling of 135252797 in words is "one hundred thirty-five million, two hundred fifty-two thousand, seven hundred ninety-seven".