135061573 has 8 divisors (see below), whose sum is σ = 136798200. Its totient is φ = 133334208.

The previous prime is 135061567. The next prime is 135061601. The reversal of 135061573 is 375160531.

It can be written as a sum of positive squares in 4 ways, for example, as 110628324 + 24433249 = 10518^2 + 4943^2 .

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 135061573 - 2⁵ = 135061541 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 (135061523) 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, 29823 + ... + 34051.

It is an arithmetic number, because the mean of its divisors is an integer number (17099775).

Almost surely, 2^135061573 is an apocalyptic number.

It is an amenable number.

135061573 is a deficient number, since it is larger than the sum of its proper divisors (1736627).

135061573 is a wasteful number, since it uses less digits than its factorization.

135061573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 135061573 is about 11621.5994166036. The cubic root of 135061573 is about 513.0707635184.

The spelling of 135061573 in words is "one hundred thirty-five million, sixty-one thousand, five hundred seventy-three".