133552307 has 8 divisors (see below), whose sum is σ = 152702976. Its totient is φ = 114419592.

The previous prime is 133552303. The next prime is 133552339. The reversal of 133552307 is 703255331.

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

It is not a de Polignac number, because 133552307 - 2² = 133552303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133552307.

It is not an unprimeable number, because it can be changed into a prime (133552301) 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, 21518 + ... + 27020.

It is an arithmetic number, because the mean of its divisors is an integer number (19087872).

Almost surely, 2^133552307 is an apocalyptic number.

133552307 is a deficient number, since it is larger than the sum of its proper divisors (19150669).

133552307 is an equidigital number, since it uses as much as digits as its factorization.

133552307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977.

The product of its (nonzero) digits is 9450, while the sum is 29.

The square root of 133552307 is about 11556.4833318791. The cubic root of 133552307 is about 511.1524712784.

The spelling of 133552307 in words is "one hundred thirty-three million, five hundred fifty-two thousand, three hundred seven".