133607505 has 32 divisors (see below), whose sum is σ = 226972800. Its totient is φ = 66880512.

The previous prime is 133607501. The next prime is 133607543. The reversal of 133607505 is 505706331.

It is not a de Polignac number, because 133607505 - 2² = 133607501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133607501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180426 + ... + 181164.

It is an arithmetic number, because the mean of its divisors is an integer number (7092900).

Almost surely, 2^133607505 is an apocalyptic number.

133607505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133607505 is a deficient number, since it is larger than the sum of its proper divisors (93365295).

133607505 is a wasteful number, since it uses less digits than its factorization.

133607505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 133607505 is about 11558.8712684241. The cubic root of 133607505 is about 511.2228824118. Note that the first 3 decimals are identical.

The spelling of 133607505 in words is "one hundred thirty-three million, six hundred seven thousand, five hundred five".