135672573 has 4 divisors (see below), whose sum is σ = 180896768. Its totient is φ = 90448380.

The previous prime is 135672569. The next prime is 135672583. The reversal of 135672573 is 375276531.

135672573 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.

It is not a de Polignac number, because 135672573 - 2² = 135672569 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 (135672553) 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, 22612093 + ... + 22612098.

It is an arithmetic number, because the mean of its divisors is an integer number (45224192).

Almost surely, 2^135672573 is an apocalyptic number.

It is an amenable number.

135672573 is a deficient number, since it is larger than the sum of its proper divisors (45224195).

135672573 is an equidigital number, since it uses as much as digits as its factorization.

135672573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45224194.

The product of its digits is 132300, while the sum is 39.

The square root of 135672573 is about 11647.8570132020. The cubic root of 135672573 is about 513.8432869712.

The spelling of 135672573 in words is "one hundred thirty-five million, six hundred seventy-two thousand, five hundred seventy-three".