133601047 has 4 divisors (see below), whose sum is σ = 133804440. Its totient is φ = 133397656.

The previous prime is 133601021. The next prime is 133601051. The reversal of 133601047 is 740106331.

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

It is a cyclic number.

It is not a de Polignac number, because 133601047 - 2¹¹ = 133598999 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 (133601947) 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, 100708 + ... + 102025.

It is an arithmetic number, because the mean of its divisors is an integer number (33451110).

Almost surely, 2^133601047 is an apocalyptic number.

133601047 is a deficient number, since it is larger than the sum of its proper divisors (203393).

133601047 is an equidigital number, since it uses as much as digits as its factorization.

133601047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203392.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 133601047 is about 11558.5919125125. The cubic root of 133601047 is about 511.2146455228.

Adding to 133601047 its reverse (740106331), we get a palindrome (873707378).

The spelling of 133601047 in words is "one hundred thirty-three million, six hundred one thousand, forty-seven".