133650557 has 4 divisors (see below), whose sum is σ = 133841916. Its totient is φ = 133459200.

The previous prime is 133650547. The next prime is 133650607. The reversal of 133650557 is 755056331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755056331 = 89 ⋅8483779.

It can be written as a sum of positive squares in 2 ways, for example, as 47141956 + 86508601 = 6866^2 + 9301^2 .

It is a cyclic number.

It is not a de Polignac number, because 133650557 - 2¹⁴ = 133634173 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 (133650527) 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 3 ways as a sum of consecutive naturals, for example, 94628 + ... + 96029.

It is an arithmetic number, because the mean of its divisors is an integer number (33460479).

Almost surely, 2^133650557 is an apocalyptic number.

It is an amenable number.

133650557 is a deficient number, since it is larger than the sum of its proper divisors (191359).

133650557 is an equidigital number, since it uses as much as digits as its factorization.

133650557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191358.

The product of its (nonzero) digits is 47250, while the sum is 35.

The square root of 133650557 is about 11560.7334109908. The cubic root of 133650557 is about 511.2777865231.

The spelling of 133650557 in words is "one hundred thirty-three million, six hundred fifty thousand, five hundred fifty-seven".