133766357 has 4 divisors (see below), whose sum is σ = 138379020. Its totient is φ = 129153696.

The previous prime is 133766341. The next prime is 133766363. The reversal of 133766357 is 753667331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 753667331 = 2089 ⋅360779.

It can be written as a sum of positive squares in 2 ways, for example, as 76143076 + 57623281 = 8726^2 + 7591^2 .

It is a cyclic number.

It is not a de Polignac number, because 133766357 - 2⁴ = 133766341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133766657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306288 + ... + 2306345.

It is an arithmetic number, because the mean of its divisors is an integer number (34594755).

Almost surely, 2^133766357 is an apocalyptic number.

It is an amenable number.

133766357 is a deficient number, since it is larger than the sum of its proper divisors (4612663).

133766357 is an equidigital number, since it uses as much as digits as its factorization.

133766357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612662.

The product of its digits is 238140, while the sum is 41.

The square root of 133766357 is about 11565.7406593785. The cubic root of 133766357 is about 511.4254074977.

The spelling of 133766357 in words is "one hundred thirty-three million, seven hundred sixty-six thousand, three hundred fifty-seven".