133575545 has 8 divisors (see below), whose sum is σ = 169719624. Its totient is φ = 100574464.

The previous prime is 133575539. The next prime is 133575571. The reversal of 133575545 is 545575331.

It can be written as a sum of positive squares in 4 ways, for example, as 20939776 + 112635769 = 4576^2 + 10613^2 .

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 133575545 - 2⁸ = 133575289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133575499 and 133575508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785654 + ... + 785823.

It is an arithmetic number, because the mean of its divisors is an integer number (21214953).

Almost surely, 2^133575545 is an apocalyptic number.

It is an amenable number.

133575545 is a deficient number, since it is larger than the sum of its proper divisors (36144079).

133575545 is a wasteful number, since it uses less digits than its factorization.

133575545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571499.

The product of its digits is 157500, while the sum is 38.

The square root of 133575545 is about 11557.4886978097. The cubic root of 133575545 is about 511.1821162730.

The spelling of 133575545 in words is "one hundred thirty-three million, five hundred seventy-five thousand, five hundred forty-five".