133337641 has 4 divisors (see below), whose sum is σ = 133364484. Its totient is φ = 133310800.

The previous prime is 133337623. The next prime is 133337653. The reversal of 133337641 is 146733331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12425625 + 120912016 = 3525^2 + 10996^2 .

It is a cyclic number.

It is not a de Polignac number, because 133337641 - 2⁵ = 133337609 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133337741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (33341121).

Almost surely, 2^133337641 is an apocalyptic number.

It is an amenable number.

133337641 is a deficient number, since it is larger than the sum of its proper divisors (26843).

133337641 is an equidigital number, since it uses as much as digits as its factorization.

133337641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26842.

The product of its digits is 13608, while the sum is 31.

The square root of 133337641 is about 11547.1919097242. The cubic root of 133337641 is about 510.8784565458.

The spelling of 133337641 in words is "one hundred thirty-three million, three hundred thirty-seven thousand, six hundred forty-one".