135753973 has 4 divisors (see below), whose sum is σ = 135783648. Its totient is φ = 135724300.

The previous prime is 135753953. The next prime is 135753979. The reversal of 135753973 is 379357531.

135753973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379357531 = 7 ⋅54193933.

It is a cyclic number.

It is not a de Polignac number, because 135753973 - 2²¹ = 133656821 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 (135753979) 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, 6361 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (33945912).

Almost surely, 2^135753973 is an apocalyptic number.

It is an amenable number.

135753973 is a deficient number, since it is larger than the sum of its proper divisors (29675).

135753973 is an equidigital number, since it uses as much as digits as its factorization.

135753973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29674.

The product of its digits is 297675, while the sum is 43.

The square root of 135753973 is about 11651.3506942328. The cubic root of 135753973 is about 513.9460306096.

The spelling of 135753973 in words is "one hundred thirty-five million, seven hundred fifty-three thousand, nine hundred seventy-three".