133172752 has 10 divisors (see below), whose sum is σ = 258022238. Its totient is φ = 66586368.

The previous prime is 133172723. The next prime is 133172759. The reversal of 133172752 is 257271331.

It can be written as a sum of positive squares in only one way, i.e., 131882256 + 1290496 = 11484^2 + 1136^2 .

It is not an unprimeable number, because it can be changed into a prime (133172759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4161633 + ... + 4161664.

Almost surely, 2^133172752 is an apocalyptic number.

It is an amenable number.

133172752 is a deficient number, since it is larger than the sum of its proper divisors (124849486).

133172752 is an equidigital number, since it uses as much as digits as its factorization.

133172752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323305 (or 8323299 counting only the distinct ones).

The product of its digits is 8820, while the sum is 31.

The square root of 133172752 is about 11540.0499132369. The cubic root of 133172752 is about 510.6677808885.

The spelling of 133172752 in words is "one hundred thirty-three million, one hundred seventy-two thousand, seven hundred fifty-two".