133803505 has 8 divisors (see below), whose sum is σ = 175161024. Its totient is φ = 97311600.

The previous prime is 133803503. The next prime is 133803521. The reversal of 133803505 is 505308331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133803505 - 2¹ = 133803503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133803503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216341 + ... + 1216450.

It is an arithmetic number, because the mean of its divisors is an integer number (21895128).

Almost surely, 2^133803505 is an apocalyptic number.

It is an amenable number.

133803505 is a deficient number, since it is larger than the sum of its proper divisors (41357519).

133803505 is a wasteful number, since it uses less digits than its factorization.

133803505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432807.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 133803505 is about 11567.3464977928. The cubic root of 133803505 is about 511.4727454409.

The spelling of 133803505 in words is "one hundred thirty-three million, eight hundred three thousand, five hundred five".